Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337670418
Author: Kotz
Publisher: Cengage
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Textbook Question
Chapter 13.4, Problem 13.8CYU
An aluminum-containing compound has the empirical formula (C2HS)2AIF. Find the molecular formula if 0.448 g of the compound dissolved in 23.46 g of benzene has a freezing point of 5.265 °C.
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There is an instrument in Johnson 334 that measures total-reflectance x-ray fluorescence (TXRF) to do elemental analysis (i.e., determine what elements are present in a sample). A researcher is preparing a to measure calcium content in a series of well water samples by TXRF with an internal standard of vanadium (atomic symbol: V). She has prepared a series of standard solutions to ensure a linear instrument response over the expected Ca concentration range of 40-80 ppm. The concentrations of Ca and V (ppm) and the instrument response (peak area, arbitrary units) are shown below. Also included is a sample spectrum. Equation 1 describes the response factor, K, relating the analyte signal (SA) and the standard signal (SIS) to their respective concentrations (CA and CIS).
Ca, ppm
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SV, arb. units
20.0
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10.0
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39275.74
12988.01
80.0
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14268.54
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A mixture of 0.568 M H₂O, 0.438 M Cl₂O, and 0.710 M HClO are enclosed in a vessel at 25 °C.
H₂O(g) + C₁₂O(g) = 2 HOCl(g)
K = 0.0900 at 25°C
с
Calculate the equilibrium concentrations of each gas at 25 °C.
[H₂O]=
[C₁₂O]=
[HOCI]=
M
Σ
M
What units (if any) does the response factor (K) have? Does the response factor (K) depend upon how the concentration is expressed (e.g. molarity, ppm, ppb, etc.)?
Chapter 13 Solutions
Chemistry & Chemical Reactivity
Ch. 13.1 - (a) If you dissolve 10.0 g (about one heaping...Ch. 13.2 - Use the data in Table 13.1 to calculate the...Ch. 13.3 - Prob. 13.3CYUCh. 13.4 - Assume you dissolve 10.0 g of sucrose (C12H22O11)...Ch. 13.4 - What quantity of ethylene glycol, HOCH2CH2OH, must...Ch. 13.4 - In the northern United States, summer cottages are...Ch. 13.4 - Bradykinin is a small peptide (9 amino acids; 1060...Ch. 13.4 - An aluminum-containing compound has the empirical...Ch. 13.4 - A 1.40-g sample of polyethylene, a common plastic,...Ch. 13.4 - Calculate the freezing point of 525 g of water...
Ch. 13.5 - The blue line on the diagram illustrates the...Ch. 13.5 - How many theoretical plates are required to...Ch. 13.5 - Prob. 1.3ACPCh. 13.5 - The vapor pressure of pure heptane is 361.5 mm Hg...Ch. 13.5 - If the headspace of a soda is 25 mL and the...Ch. 13.5 - Prob. 2.2ACPCh. 13.5 - Prob. 2.3ACPCh. 13.5 - Prob. 2.4ACPCh. 13.5 - Prob. 3.1ACPCh. 13.5 - Prob. 3.2ACPCh. 13.5 - Prob. 3.3ACPCh. 13 - You dissolve 2.56 g of succinic acid, C2H4(CO2H)2,...Ch. 13 - You dissolve 45.0 g of camphor, C10H16O, in 425 mL...Ch. 13 - Prob. 3PSCh. 13 - Prob. 4PSCh. 13 - Prob. 5PSCh. 13 - Prob. 6PSCh. 13 - Prob. 7PSCh. 13 - Prob. 8PSCh. 13 - Hydrochloric acid is sold as a concentrated...Ch. 13 - Concentrated sulfuric acid has a density of 1.84...Ch. 13 - The average lithium ion concentration in seawater...Ch. 13 - Silver ion has an average concentration of 28 ppb...Ch. 13 - Which pairs of liquids will be miscible? (a) H2O...Ch. 13 - Acetone, CH3COCH3, is quite soluble in water....Ch. 13 - Prob. 15PSCh. 13 - Use the following data to calculate the enthalpy...Ch. 13 - You make a saturated solution of NaCl at 25 C. No...Ch. 13 - Some lithium chloride, LiCl, is dissolved in 100...Ch. 13 - Prob. 19PSCh. 13 - The Henrys law constant for O2 in water at 25 is...Ch. 13 - An unopened soda can has an aqueous CO2...Ch. 13 - Hydrogen gas has a Henrys law constant of 7.8 104...Ch. 13 - A sealed flask contains water and oxygen gas at 25...Ch. 13 - Butane, C4H10, has been suggested as the...Ch. 13 - A 35.0-g sample of ethylene glycol, HOCH2CH2OH, is...Ch. 13 - Urea, (NH2)2CO, which is widely used in...Ch. 13 - Pure ethylene glycol, HOCH2CH2OH, is added 2.00 kg...Ch. 13 - Pure iodine (105 g) is dissolved in 325 g of CCl4...Ch. 13 - Prob. 29PSCh. 13 - What is the boiling point of a solution composed...Ch. 13 - Prob. 31PSCh. 13 - Prob. 32PSCh. 13 - Prob. 33PSCh. 13 - Some ethylene glycol, HOCH2CH2OH, is added to your...Ch. 13 - You dissolve 15.0 g of sucrose, C12H22O11, in a...Ch. 13 - A typical bottle of wine consists of an 11%...Ch. 13 - Prob. 37PSCh. 13 - Estimate the osmotic pressure of human blood at 37...Ch. 13 - An aqueous solution containing 1.00 g of bovine...Ch. 13 - Calculate the osmotic pressure of a 0.0120 M...Ch. 13 - You add 0.255 g of an orange, crystalline compound...Ch. 13 - Butylated hydroxyanisole (BHA) is used in...Ch. 13 - Benzyl acetate is one of the active components of...Ch. 13 - Anthracene, a hydrocarbon obtained from coal, has...Ch. 13 - An aqueous solution contains 0.180 g of an...Ch. 13 - Aluminon, an organic compound, is used as a...Ch. 13 - Prob. 47PSCh. 13 - To make homemade ice cream, you cool the milk and...Ch. 13 - List the following aqueous solutions in order of...Ch. 13 - Arrange the following aqueous solutions in order...Ch. 13 - When solutions of BaCl2 and Na2SO4 are mixed, the...Ch. 13 - The dispersed phase of a certain colloidal...Ch. 13 - Phenylcarbinol is used in nasal sprays as a...Ch. 13 - (a) Which aqueous solution is expected to have the...Ch. 13 - Arrange the following aqueous solutions in order...Ch. 13 - Prob. 56GQCh. 13 - Dimethylglyoxime [DMG, (CH3CNOH)2] is used as a...Ch. 13 - A 10.7 m solution of NaOH has a density of 1.33...Ch. 13 - Concentrated aqueous ammonia has a molarity of...Ch. 13 - Prob. 60GQCh. 13 - If you want a solution that is 0.100 m in ions,...Ch. 13 - Consider the following aqueous solutions: (i) 0.20...Ch. 13 - (a) Which solution is expected to have the higher...Ch. 13 - The solubility of NaCl in water at 100 C is 39.1...Ch. 13 - Instead of using NaCl to melt the ice on your...Ch. 13 - The smell of ripe raspberries is due to...Ch. 13 - Hexachlorophene has been used in germicidal soap....Ch. 13 - The solubility of ammonium formate, NH4CHO2, in...Ch. 13 - How much N2 can dissolve in water at 25 C if the...Ch. 13 - Cigars are best stored in a humidor at 18 C and...Ch. 13 - An aqueous solution containing 10.0 g of starch...Ch. 13 - Prob. 72GQCh. 13 - Calculate the enthalpies of solution for Li2SO4...Ch. 13 - Water at 25 C has a density of 0.997 g/cm3....Ch. 13 - If a volatile solute is added to a volatile...Ch. 13 - A solution is made by adding 50.0 mL of ethanol...Ch. 13 - A 2.0% (by mass) aqueous solution of novocainium...Ch. 13 - A solution is 4.00% (by mass) maltose and 96.00%...Ch. 13 - The following table lists the concentrations of...Ch. 13 - A tree is 10.0 m tall. (a) What must be the total...Ch. 13 - Prob. 81GQCh. 13 - A compound is known to be a potassium halide, KX....Ch. 13 - Prob. 85GQCh. 13 - If one is very careful, it is possible to float a...Ch. 13 - A solution of benzoic acid in benzene has a...Ch. 13 - You dissolve 5.0 mg of iodine, I2, in 25 mL of...Ch. 13 - Prob. 89ILCh. 13 - In a police forensics lab, you examine a package...Ch. 13 - An organic compound contains carbon (71.17%),...Ch. 13 - Prob. 92ILCh. 13 - When sails of Mg2+, Ca2+, and Be2+ are placed in...Ch. 13 - Explain why a cucumber shrivels up when it is...Ch. 13 - Prob. 95SCQCh. 13 - A 100.-gram sample of sodium chloride (NaCl) is...Ch. 13 - Prob. 97SCQCh. 13 - Prob. 98SCQCh. 13 - Starch contains CC, CH, CO, and OH bonds....Ch. 13 - Prob. 100SCQCh. 13 - You have two aqueous solutions separated by a...Ch. 13 - Prob. 102SCQCh. 13 - Sodium chloride (NaCl) is commonly used to melt...Ch. 13 - Prob. 105SCQCh. 13 - Prob. 106SCQCh. 13 - Prob. 107SCQ
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY