Chemistry
12th Edition
ISBN: 9780078021510
Author: Raymond Chang Dr., Kenneth Goldsby Professor
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 12, Problem 12.66QP
A solution of 6.85 g of a carbohydrate in 100.0 g of water has a density of 1.024 g/mL and an osmotic pressure of 4.61 atm at 20.0°C. Calculate the molar mass of the carbohydrate.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The data for the potential difference of a battery and its temperature are given in the table. Calculate the entropy change in J mol-1 K-1 (indicate the formulas used).Data: F = 96485 C mol-1
In a cell, the change in entropy (AS) can be calculated from the slope of the E° vs
1/T graph. The slope is equal to -AS/R, where R is the gas constant. Is this correct?
Using the Arrhenius equation, it is possible to establish the relationship between the rate constant (k) of a chemical reaction and the temperature (T), in Kelvin (K), the universal gas constant (R), the pre-exponential factor (A) and the activation energy (Ea). This equation is widely applied in studies of chemical kinetics, and is also widely used to determine the activation energy of reactions. In this context, the following graph shows the variation of the rate constant with the inverse of the absolute temperature, for a given chemical reaction that obeys the Arrhenius equation. Based on the analysis of this graph and the concepts acquired about the kinetics of chemical reactions, analyze the following statements:
I. The activation energy (Ea) varies with the temperature of the system.
II. The activation energy (Ea) varies with the concentration of the reactants.
III. The rate constant (K) varies proportionally with temperature.
IV. The value of the…
Chapter 12 Solutions
Chemistry
Ch. 12.2 - Prob. 1PECh. 12.2 - Prob. 1RCCh. 12.3 - Prob. 2PECh. 12.3 - Prob. 3PECh. 12.3 - Prob. 4PECh. 12.3 - Prob. 5PECh. 12.3 - A solution is prepared at 20C and its...Ch. 12.4 - Using Figure 12.3, rank the potassium salts in...Ch. 12.5 - Calculate the molar concentration of oxygen in...Ch. 12.5 - Which of the following gases has the greatest...
Ch. 12.6 - Calculate the vapor pressure of a solution made by...Ch. 12.6 - A solution contains equal molar amounts of liquids...Ch. 12.6 - Prob. 8PECh. 12.6 - Prob. 9PECh. 12.6 - What does it mean when we say that the osmotic...Ch. 12.6 - A solution of 0.85 g of an organic compound in...Ch. 12.6 - Prob. 11PECh. 12.7 - Indicate which compound in each of the following...Ch. 12.7 - The freezing-point depression of a 0.100 m MgSO4...Ch. 12.7 - Prob. 2RCCh. 12 - Prob. 12.1QPCh. 12 - Prob. 12.2QPCh. 12 - Briefly describe the solution process at the...Ch. 12 - Prob. 12.4QPCh. 12 - Prob. 12.5QPCh. 12 - As you know, some solution processes are...Ch. 12 - Prob. 12.7QPCh. 12 - Describe the factors that affect the solubility of...Ch. 12 - Prob. 12.9QPCh. 12 - Prob. 12.10QPCh. 12 - Arrange the following compounds in order of...Ch. 12 - Explain the variations in solubility in water of...Ch. 12 - Prob. 12.13QPCh. 12 - Prob. 12.14QPCh. 12 - Calculate the percent by mass of the solute in...Ch. 12 - Calculate the amount of water (in grams) that must...Ch. 12 - Prob. 12.17QPCh. 12 - Prob. 12.18QPCh. 12 - Calculate the molalities of the following aqueous...Ch. 12 - For dilute aqueous solutions in which the density...Ch. 12 - Prob. 12.21QPCh. 12 - The concentrated sulfuric acid we use in the...Ch. 12 - Prob. 12.23QPCh. 12 - The density of an aqueous solution containing 10.0...Ch. 12 - Prob. 12.25QPCh. 12 - Describe the fractional crystallization process...Ch. 12 - A 3.20-g sample of a salt dissolves in 9.10 g of...Ch. 12 - The solubility of KNO3 is 155 g per 100 g of water...Ch. 12 - Prob. 12.29QPCh. 12 - Discuss the factors that influence the solubility...Ch. 12 - Prob. 12.31QPCh. 12 - Prob. 12.32QPCh. 12 - Prob. 12.33QPCh. 12 - A man bought a goldfish in a pet shop. Upon...Ch. 12 - A beaker of water is initially saturated with...Ch. 12 - A miner working 260 m below sea level opened a...Ch. 12 - The solubility of CO2 in water at 25C and 1 atm is...Ch. 12 - The solubility of N2 in blood at 37C and at a...Ch. 12 - Prob. 12.39QPCh. 12 - Write the equation representing Raoults law, and...Ch. 12 - Prob. 12.41QPCh. 12 - Prob. 12.42QPCh. 12 - Prob. 12.43QPCh. 12 - Prob. 12.44QPCh. 12 - Prob. 12.45QPCh. 12 - Prob. 12.46QPCh. 12 - Prob. 12.47QPCh. 12 - Describe how you would use freezing-point...Ch. 12 - Prob. 12.49QPCh. 12 - Prob. 12.50QPCh. 12 - The vapor pressure of benzene is 100.0 mmHg at...Ch. 12 - The vapor pressures of ethanol (C2H5OH) and...Ch. 12 - The vapor pressure of ethanol (C2H5OH) at 20C is...Ch. 12 - Prob. 12.54QPCh. 12 - What are the boiling point and freezing point of a...Ch. 12 - Prob. 12.56QPCh. 12 - Pheromones are compounds secreted by the females...Ch. 12 - The elemental analysis of an organic solid...Ch. 12 - How many liters of the antifreeze ethylene glycol...Ch. 12 - Prob. 12.60QPCh. 12 - Prob. 12.61QPCh. 12 - A solution of 2.50 g of a compound having the...Ch. 12 - A solution containing 0.8330 g of a polymer of...Ch. 12 - Prob. 12.65QPCh. 12 - A solution of 6.85 g of a carbohydrate in 100.0 g...Ch. 12 - Prob. 12.67QPCh. 12 - Prob. 12.69QPCh. 12 - Consider two aqueous solutions, one of sucrose...Ch. 12 - Arrange the following solutions in order of...Ch. 12 - Prob. 12.72QPCh. 12 - What are the normal freezing points and boiling...Ch. 12 - At 25C the vapor pressure of pure water is 23.76...Ch. 12 - Both NaCl and CaCl2 are used to melt ice on roads...Ch. 12 - A 0.86 percent by mass solution of NaCl is called...Ch. 12 - Prob. 12.77QPCh. 12 - Calculate the osmotic pressure of a 0.0500 M MgSO4...Ch. 12 - Prob. 12.79QPCh. 12 - Prob. 12.80QPCh. 12 - Prob. 12.81QPCh. 12 - Water and methanol are miscible with each other...Ch. 12 - Lysozyme is an enzyme that cleaves bacterial cell...Ch. 12 - Prob. 12.84QPCh. 12 - Prob. 12.85QPCh. 12 - Two liquids A and B have vapor pressures of 76...Ch. 12 - Prob. 12.87QPCh. 12 - Prob. 12.88QPCh. 12 - Prob. 12.89QPCh. 12 - Calculate the mass of naphthalene (C10H8) that...Ch. 12 - Consider the three mercury manometers shown. One...Ch. 12 - Prob. 12.92QPCh. 12 - Prob. 12.93QPCh. 12 - A solution of 1.00 g of anhydrous aluminum...Ch. 12 - Desalination is a process of removing dissolved...Ch. 12 - Prob. 12.96QPCh. 12 - A protein has been isolated as a salt with the...Ch. 12 - Prob. 12.98QPCh. 12 - Hydrogen peroxide with a concentration of 3.0...Ch. 12 - State which of the alcohols listed in Problem...Ch. 12 - Prob. 12.101QPCh. 12 - Iodine (I2) is only sparingly soluble in water...Ch. 12 - Prob. 12.103QPCh. 12 - In the apparatus shown, what will happen if the...Ch. 12 - Prob. 12.105QPCh. 12 - Concentrated hydrochloric acid is usually...Ch. 12 - Explain each of the following statements: (a) The...Ch. 12 - Prob. 12.108QPCh. 12 - A 0.050 M hydrofluoric acid (HF) solution is 11...Ch. 12 - Shown here is a plot of vapor pressures of two...Ch. 12 - Prob. 12.111QPCh. 12 - Prob. 12.112QPCh. 12 - Prob. 12.113QPCh. 12 - Prob. 12.114QPCh. 12 - Prob. 12.115QPCh. 12 - A mixture of ethanol and 1-propanol behaves...Ch. 12 - Prob. 12.117QPCh. 12 - Prob. 12.118QPCh. 12 - Prob. 12.119QPCh. 12 - Acetic acid is a weak acid that ionizes in...Ch. 12 - Making mayonnaise involves beating oil into small...Ch. 12 - Acetic acid is a polar molecule and can form...Ch. 12 - A 2.6-L sample of water contains 192 g of lead....Ch. 12 - Certain fishes in the Antarctic Ocean swim in...Ch. 12 - Prob. 12.125QPCh. 12 - Prob. 12.126QPCh. 12 - Prob. 12.127QPCh. 12 - At 27C, the vapor pressure of pure water is 23.76...Ch. 12 - Prob. 12.129QPCh. 12 - Liquids A (molar mass 100 g/mol) and B (molar mass...Ch. 12 - A very long pipe is capped at one end with a...Ch. 12 - Prob. 12.132QPCh. 12 - A mixture of liquids A and B exhibits ideal...Ch. 12 - Prob. 12.134QPCh. 12 - (a) Derive the equation relating the molality (m)...Ch. 12 - Prob. 12.136QPCh. 12 - A student carried out the following procedure to...Ch. 12 - Valinomycin is an antibiotic. It functions by...Ch. 12 - Prob. 12.139QPCh. 12 - Here is an after-dinner trick. With guests still...Ch. 12 - The molecule drawn here has shown promise as an...Ch. 12 - The Henrys law constant of oxygen in water at 25C...Ch. 12 - The diagram shows the vapor pressure curves for...Ch. 12 - Prob. 12.144IMECh. 12 - Prob. 12.146IME
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- In an electrolytic cell, indicate the formula that relates E0 to the temperature T.arrow_forward-- 14:33 A Candidate Identification docs.google.com 11. Compound A can transform into compound B through an organic reaction. From the structures below, mark the correct one: HO A تھے۔ די HO B ○ A) Compounds A and B are isomers. B) Both have the same number of chiral carbons. C) Compound A underwent an addition reaction of Cl2 and H2O to form compound B. D) Compound A underwent a substitution reaction forming the intermediate chlorohydrin to obtain compound B. E) Compound A underwent an addition reaction of Cl2 forming the chloronium ion and then added methanol to obtain compound B. 60arrow_forward-- 14:40 A Candidate Identification docs.google.com 13. The compound 1-bromo-hex-2-ene reacts with methanol to form two products. About this reaction, mark the correct statement: OCH3 CH3OH Br OCH3 + + HBr A B A) The two products formed will have the same percentage of formation. B) Product B will be formed by SN1 substitution reaction with the formation of an allylic carbocation. C) Product A will be formed by SN1 substitution reaction with the formation of a more stable carbocation than product B. D) Product A will be formed by an SN2 substitution reaction occurring in two stages, the first with slow kinetics and the second with fast kinetics. E) The two compounds were obtained by addition reaction, with compound B having the highest percentage of formation. 57arrow_forward
- -- ☑ 14:30 A Candidate Identification docs.google.com 10. Amoxicillin (figure X) is one of the most widely used antibiotics in the penicillin family. The discovery and synthesis of these antibiotics in the 20th century made the treatment of infections that were previously fatal routine. About amoxicillin, mark the correct one: HO NH2 H S -N. HO Figura X. Amoxicilina A) It has the organic functions amide, ester, phenol and amine. B) It has four chiral carbons and 8 stereoisomers. C) The substitution of the aromatic ring is of the ortho-meta type. D) If amoxicillin reacts with an alcohol it can form an ester. E) The structure has two tertiary amides. 62arrow_forwardThe environmental police of a Brazilian state received a report of contamination of a river by inorganic arsenic, due to the excessive use of pesticides on a plantation on the riverbanks. Arsenic (As) is extremely toxic in its many forms and oxidation states. In nature, especially in groundwater, it is found in the form of arsenate (AsO ₄ ³ ⁻ ), which can be electrochemically reduced to As ⁰ and collected at the cathode of a coulometric cell. In this case, Potentiostatic Coulometry (at 25°C) was performed in an alkaline medium (pH = 7.5 throughout the analysis) to quantify the species. What potential (E) should have been selected/applied to perform the analysis, considering that this is an exhaustive electrolysis technique (until 99.99% of all AsO ₄ ³ ⁻ has been reduced to As ⁰ at the electrode, or n( final) = 0.01% n( initial )) and that the concentration of AsO ₄ ³ ⁻ found in the initial sample was 0.15 mmol/L ? Data: AsO ₄ 3 ⁻ (aq) + 2 H ₂ O ( l ) + 2 e ⁻ → A s O ₂ ⁻ ( a…arrow_forward-- 14:17 15. Water-soluble proteins are denatured when there is a change in the pH of the environment in which they are found. This occurs due to the protonation and deprotonation of functional groups present in their structure. Choose the option that indicates the chemical bonds modified by pH in the protein represented in the following figure. E CH2 C-OH CH2 H₂C H₁C CH CH3 CH3 CH CH₂-S-S-CH₂- 910 H B -CH2-CH2-CH2-CH₂-NH3* −0—C—CH₂- ○ A) A, C e D. • В) Вес ○ C) DeE ○ D) B, De E ○ E) A, B e C 68arrow_forward
- Suppose sodium sulfate has been gradually added to 100 mL of a solution containing calcium ions and strontium ions, both at 0.15 mol/L. Indicate the alternative that presents the percentage of strontium ions that will have precipitated when the calcium sulfate begins to precipitate. Data: Kps of calcium sulfate: 2.4x10 ⁻ ⁵; Kps of strontium sulfate: 3.2x10 ⁻ ⁷ A) 20,2 % B) 36,6 % C) 62,9 % D) 87,5 % E) 98.7%arrow_forward14:43 A Candidate Identification docs.google.com 14. The following diagrams represent hypothetical membrane structures with their components numbered from 1 to 6. Based on the figures and your knowledge of biological membranes, select the correct alternative. | 3 5 || 人 2 500000 6 A) Structures 1, 3, 5, 2 and 4 are present in a constantly fluid arrangement that allows the selectivity of the movement ○ of molecules. Structure 4, present integrally or peripherally, is responsible for this selection, while the quantity of 6 regulates the fluidity. B) The membranes isolate the cell from the environment, but allow the passage of water-soluble molecules thanks to the presence of 2 and 3. The membrane in scheme is more fluid than that in 55arrow_forward12. Mark the correct statement about reactions a and b : a. Br + -OH Br b. + Br H₂O + Br -OH + H₂O A) The reactions are elimination reactions, with reaction "a" being of type E2 and reaction "b" being of type E1. B) Reaction "a" is an E2 type elimination occurring in one step and reaction "b" is an SN1 type substitution. C) Both reactions can result in the formation of carbocation, but in reaction "b" the most stable carbocation will be formed. D) Both reactions occur at the same rate ○ and have the same number of reaction steps. E) Reaction "b" is an E2 type elimination occurring in two steps and reaction "a" is an SN2 type substitution.arrow_forward
- Chloroform, long used as an anesthetic and now considered carcinogenic, has a heat of vaporization of 31.4 kJ/mol. During vaporization, its entropy increases by 94.2 J/mol.K. Therefore, select the alternative that indicates the temperature, in degrees Celsius, at which chloroform begins to boil under a pressure of 1 atm. A) 28 B) 40 C) 52 D) 60 E) 72arrow_forwardIf we assume a system with an anodic overpotential, the variation of n as a function of current density: 1. at low fields is linear 2. at higher fields, it follows Tafel's law Obtain the range of current densities for which the overpotential has the same value when calculated for 1 and 2 cases (maximum relative difference of 5% compared to the behavior for higher fields). To which overpotential range does this correspond? Data: i = 1.5 mA cm², T = 300°C, B = 0.64, R = 8.314 J K1 mol-1 and F = 96485 C mol-1.arrow_forwardAnswer by equation pleasearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY