Chemistry & Chemical Reactivity, Hybrid Edition (with OWLv2 24-Months Printed Access Card)
9th Edition
ISBN: 9781285462530
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 13, Problem 34PS
Some ethylene glycol, HOCH2CH2OH, is added to your car’s cooling system along with 5.0 kg of water. If the freezing point of the water-glycol solution is −15.0 °C, what mass of HOCH2CH2OH must have been added?
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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).
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V, ppm
SCa, arb. units
SV, arb. units
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36182.15
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10.0
39275.74
12988.01
80.0
10.0
57530.75
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100.0…
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
Chapter 13 Solutions
Chemistry & Chemical Reactivity, Hybrid Edition (with OWLv2 24-Months Printed Access Card)
Ch. 13.1 - (a) If you dissolve 10.0 g (about one heaping...Ch. 13.1 - You dissolve 1.0 mol of urea (H2NCONH2) in 270 g...Ch. 13.1 - 2. The concentration of acetic acid, CH3CO2H, in a...Ch. 13.2 - Use the data in Table 13.1 to calculate the...Ch. 13.2 - Given the enthalpy of formation data below,...Ch. 13.3 - Prob. 1CYUCh. 13.3 - Prob. 1RCCh. 13.3 - If the headspace of a soda is 25 mL and the...Ch. 13.3 - Prob. 2QCh. 13.3 - Prob. 3Q
Ch. 13.3 - Prob. 4QCh. 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. 13.4 - 1. Vapor pressure: Arrange the following aqueous...Ch. 13.4 - Prob. 2RCCh. 13.4 - Samples of each of the substances listed below are...Ch. 13.4 - Motor mass: Erythritol is a compound that occurs...Ch. 13.5 - Prob. 1RCCh. 13.5 - The blue line on the diagram illustrates the...Ch. 13.5 - How many theoretical plates are required to...Ch. 13.5 - Prob. 3QCh. 13.5 - The vapor pressure of pure heptane is 361.5 mm Hg...Ch. 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