Chemistry: Principles and Practice
3rd Edition
ISBN: 9780534420123
Author: Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher: Cengage Learning
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Chapter 15, Problem 15.130QE
A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to bring the volume to 500.0 mL of solution.
(a) Calculate the pH and pOH in the final solution.
(b) Why would we wait for it to return to room temperature?
(c) If the mass of the water used to initially dissolve the sodium hydroxide were exactly 450 g and the temperature of the water increased by 8.865 °C, how much heat was given off by the dissolution of 15.0 g of solute? Assume the specific heat of the solution is 4.184 J/g. K. What is the molar heat change for the dissolution of sodium hydroxide (known as the enthalpy of solution, ΔHsol)?
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Chapter 15 Solutions
Chemistry: Principles and Practice
Ch. 15 - Prob. 15.1QECh. 15 - Can a compound be an Arrhenius base and not a...Ch. 15 - Water is not the only solvent that undergoes...Ch. 15 - Write two BrnstedLowry acid-base reactions and...Ch. 15 - Define pH and explain why pH, rather than...Ch. 15 - Prob. 15.6QECh. 15 - Prob. 15.7QECh. 15 - Prob. 15.8QECh. 15 - Prob. 15.9QECh. 15 - Prob. 15.10QE
Ch. 15 - Prob. 15.11QECh. 15 - Prob. 15.12QECh. 15 - Why have chemists not tabulated the fraction...Ch. 15 - Prob. 15.15QECh. 15 - Prob. 15.16QECh. 15 - Prob. 15.17QECh. 15 - Prob. 15.18QECh. 15 - Define oxyacid and give examples from among the...Ch. 15 - Prob. 15.20QECh. 15 - Prob. 15.21QECh. 15 - Prob. 15.22QECh. 15 - Prob. 15.23QECh. 15 - Prob. 15.24QECh. 15 - Prob. 15.25QECh. 15 - Write the formula and name for the conjugate acid...Ch. 15 - For each of the following reactions, identify the...Ch. 15 - Prob. 15.28QECh. 15 - Prob. 15.29QECh. 15 - Prob. 15.30QECh. 15 - Prob. 15.31QECh. 15 - Write an equation to describe the proton transfer...Ch. 15 - Prob. 15.33QECh. 15 - Determine the hydrogen ion or hydroxide ion...Ch. 15 - Prob. 15.35QECh. 15 - The hydroxide ion concentrations in wines actually...Ch. 15 - Prob. 15.37QECh. 15 - Prob. 15.38QECh. 15 - Prob. 15.39QECh. 15 - Prob. 15.40QECh. 15 - Prob. 15.41QECh. 15 - Prob. 15.42QECh. 15 - Prob. 15.43QECh. 15 - Prob. 15.44QECh. 15 - Prob. 15.45QECh. 15 - Prob. 15.46QECh. 15 - A saturated solution of milk of magnesia, Mg(OH)2,...Ch. 15 - Find [OH] and the pH of the following solutions....Ch. 15 - Write the chemical equation for the ionization of...Ch. 15 - Prob. 15.50QECh. 15 - Prob. 15.51QECh. 15 - Prob. 15.52QECh. 15 - Prob. 15.53QECh. 15 - Assuming that the conductivity of an acid solution...Ch. 15 - Prob. 15.55QECh. 15 - Prob. 15.56QECh. 15 - Prob. 15.57QECh. 15 - Prob. 15.58QECh. 15 - Prob. 15.59QECh. 15 - A 0.10 M solution of chloroacetic acid, ClCH2COOH,...Ch. 15 - Prob. 15.61QECh. 15 - Prob. 15.62QECh. 15 - Prob. 15.63QECh. 15 - Prob. 15.64QECh. 15 - Prob. 15.65QECh. 15 - Prob. 15.66QECh. 15 - Prob. 15.67QECh. 15 - Prob. 15.68QECh. 15 - Write the chemical equation for the ionization of...Ch. 15 - Prob. 15.70QECh. 15 - Hydrazine, N2H4, is weak base with Kb = 1.3 106....Ch. 15 - Prob. 15.72QECh. 15 - Prob. 15.73QECh. 15 - Prob. 15.74QECh. 15 - Calculate the [OH] and the pH of a 0.024 M...Ch. 15 - Prob. 15.76QECh. 15 - Prob. 15.77QECh. 15 - Prob. 15.78QECh. 15 - Prob. 15.79QECh. 15 - Prob. 15.80QECh. 15 - Find the value of Kb for the conjugate base of the...Ch. 15 - Consider sodium acrylate, NaC3H3O2. Ka for acrylic...Ch. 15 - Prob. 15.83QECh. 15 - Prob. 15.84QECh. 15 - Prob. 15.85QECh. 15 - Prob. 15.86QECh. 15 - Prob. 15.87QECh. 15 - Prob. 15.88QECh. 15 - Prob. 15.89QECh. 15 - Prob. 15.90QECh. 15 - Prob. 15.91QECh. 15 - Prob. 15.92QECh. 15 - Prob. 15.93QECh. 15 - Prob. 15.94QECh. 15 - Explain how to calculate the pH of a solution that...Ch. 15 - Prob. 15.96QECh. 15 - Prob. 15.97QECh. 15 - Prob. 15.98QECh. 15 - Hypofluorous acid, HOF, is known, but fluorous...Ch. 15 - Prob. 15.100QECh. 15 - Prob. 15.101QECh. 15 - Prob. 15.102QECh. 15 - Which of each pair of acids is stronger? Why? (a)...Ch. 15 - Prob. 15.104QECh. 15 - Prob. 15.105QECh. 15 - Prob. 15.106QECh. 15 - Prob. 15.107QECh. 15 - Prob. 15.108QECh. 15 - Prob. 15.109QECh. 15 - Prob. 15.110QECh. 15 - Prob. 15.111QECh. 15 - Prob. 15.112QECh. 15 - Prob. 15.113QECh. 15 - Prob. 15.114QECh. 15 - Prob. 15.115QECh. 15 - Prob. 15.116QECh. 15 - Prob. 15.117QECh. 15 - Prob. 15.118QECh. 15 - Prob. 15.119QECh. 15 - Prob. 15.120QECh. 15 - A solution is made by diluting 25.0 mL of...Ch. 15 - A Liquid HF undergoes an autoionization reaction:...Ch. 15 - Pure liquid ammonia ionizes in a manner similar to...Ch. 15 - Prob. 15.124QECh. 15 - Prob. 15.125QECh. 15 - Prob. 15.126QECh. 15 - Prob. 15.127QECh. 15 - Prob. 15.128QECh. 15 - An aqueous solution contains formic acid and...Ch. 15 - A solution is made by dissolving 15.0 g sodium...Ch. 15 - Calculate the pH of a solution prepared by adding...Ch. 15 - Prob. 15.132QECh. 15 - Prob. 15.133QECh. 15 - When perchloric acid ionizes, it makes the...Ch. 15 - Prob. 15.135QE
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