Chemistry: The Molecular Nature of Matter and Change
9th Edition
ISBN: 9781260477467
Author: Martin Silberberg
Publisher: Mcgraw-hill Higher Education (us)
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Question
Chapter 18, Problem 18.54P
Interpretation Introduction
Interpretation: To determine which of the following options represents that it has been 33% dissociated.
Concept introduction: Weak acid will not completely dissociate into ions; hence, the percent of dissociation is not high. Dissociation is considered the conversion of ions into their suitable solvent. The percent dissociation will vary from solvent to solvent.
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A solution contains 0.0000001 (10-7) moles of hydrogen ions [H+] per liter. Which of the following best describes this solution?
acidic: H+ acceptor
basic: H+ acceptor
acidic: H+ donor
neutral
The pH of a 0.0200 M solution of an unknown acid is 2.56. What is the Ka of this acid?
To solve this problem:
Write the acid dissociation equilibrium for the generic acid “HA”
Set up an ICE chart ( with x = the concentration of H3O+ at equilibrium)
Write the expression for Ka.
Fill this in with the concentrations of H3O+, A- and HA at equilibrium, in terms of x.
What is x? Can you find it from the given information? You should be able to use the pH to get the concentration of H3O+, which is x. Do this.
Now that you know x, plug in into the Ka expression and find Ka.
Part A
Find [H3O]+ at equilibrium of a 0.110 mol - L solution of a weak monoprotic acid (HA) with Ka = 1.70x105.
Use the "x is small" assumption
Express your answer to three significant figures.
[H3O]+ = 1.37-10 -³ mol · L-1
%3!
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Part B
Based on the [H3O]+ = 1.37x103 mol · L1, find the percent ionization of this solution (ie, validate the "x is smal" assumption).
Express your answer using three significant figures.
%
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Chapter 18 Solutions
Chemistry: The Molecular Nature of Matter and Change
Ch. 18.2 - Prob. 18.1AFPCh. 18.2 - Prob. 18.1BFPCh. 18.2 - Prob. 18.2AFPCh. 18.2 - Prob. 18.2BFPCh. 18.2 - Prob. 18.3AFPCh. 18.2 - Prob. 18.3BFPCh. 18.3 - Prob. 18.4AFPCh. 18.3 - Prob. 18.4BFPCh. 18.4 - Prob. 18.5AFPCh. 18.4 - Prob. 18.5BFP
Ch. 18.5 - Prob. 18.6AFPCh. 18.5 - Prob. 18.6BFPCh. 18.5 - Prob. 18.7AFPCh. 18.5 - Prob. 18.7BFPCh. 18.5 - Prob. 18.8AFPCh. 18.5 - Prob. 18.8BFPCh. 18.5 - Prob. 18.9AFPCh. 18.5 - Prob. 18.9BFPCh. 18.7 - Prob. 18.10AFPCh. 18.7 - Prob. 18.10BFPCh. 18.7 - Prob. 18.11AFPCh. 18.7 - Prob. 18.11BFPCh. 18.8 - Prob. 18.12AFPCh. 18.8 - Prob. 18.12BFPCh. 18.8 - Prob. 18.13AFPCh. 18.8 - Prob. 18.13BFPCh. 18.10 - Prob. 18.14AFPCh. 18.10 - Prob. 18.14BFPCh. 18 - Prob. 18.1PCh. 18 - Prob. 18.2PCh. 18 - Prob. 18.3PCh. 18 - Prob. 18.4PCh. 18 - Prob. 18.5PCh. 18 - Prob. 18.6PCh. 18 - Which of the following are Arrhenius...Ch. 18 - Prob. 18.8PCh. 18 - Prob. 18.9PCh. 18 - A Brønstcd-Lowry acid-base reaction proceeds in...Ch. 18 - Prob. 18.11PCh. 18 - Give the formula of the conjugate...Ch. 18 - Give the formula of the conjugate base:
Ch. 18 - Give the formula of the conjugate...Ch. 18 - Prob. 18.15PCh. 18 - Prob. 18.16PCh. 18 - In each equation, label the acids, bases, and...Ch. 18 - Prob. 18.18PCh. 18 - Prob. 18.19PCh. 18 - Prob. 18.20PCh. 18 - Prob. 18.21PCh. 18 - Prob. 18.22PCh. 18 - The following aqueous species constitute two...Ch. 18 - Prob. 18.24PCh. 18 - Use Figure 18.8 to determine whether Kc > 1...Ch. 18 - Prob. 18.26PCh. 18 - Prob. 18.27PCh. 18 - Prob. 18.28PCh. 18 - Prob. 18.29PCh. 18 - Prob. 18.30PCh. 18 - Which solution has the higher pH? Explain.
A 0.1 M...Ch. 18 - Prob. 18.32PCh. 18 - Prob. 18.33PCh. 18 - Prob. 18.34PCh. 18 - Prob. 18.35PCh. 18 - Prob. 18.36PCh. 18 - Prob. 18.37PCh. 18 - Prob. 18.38PCh. 18 - Prob. 18.39PCh. 18 - The two molecular scenes shown depict the relative...Ch. 18 - Prob. 18.41PCh. 18 - Prob. 18.42PCh. 18 - Prob. 18.43PCh. 18 - Prob. 18.44PCh. 18 - Prob. 18.45PCh. 18 - (a) What is the pH of 0.0111 M NaOH? Is the...Ch. 18 - (a) What is the pH of 0.0333 M HNO3? Is the...Ch. 18 - Prob. 18.48PCh. 18 - (a) What is the pH of 7.52×10−4 M CsOH? Is the...Ch. 18 - Prob. 18.50PCh. 18 - Prob. 18.51PCh. 18 - Prob. 18.52PCh. 18 - Prob. 18.53PCh. 18 - Prob. 18.54PCh. 18 - Prob. 18.55PCh. 18 - Prob. 18.56PCh. 18 - Prob. 18.57PCh. 18 - Prob. 18.58PCh. 18 - Prob. 18.59PCh. 18 - Prob. 18.60PCh. 18 - Prob. 18.61PCh. 18 - Prob. 18.62PCh. 18 - Prob. 18.63PCh. 18 - Prob. 18.64PCh. 18 - Prob. 18.65PCh. 18 - Prob. 18.66PCh. 18 - Prob. 18.67PCh. 18 - Hypochlorous acid, HClO, has a pKa of 7.54. What...Ch. 18 - Prob. 18.69PCh. 18 - Prob. 18.70PCh. 18 - Prob. 18.71PCh. 18 - Prob. 18.72PCh. 18 - Prob. 18.73PCh. 18 - Prob. 18.74PCh. 18 - Prob. 18.75PCh. 18 - Prob. 18.76PCh. 18 - Prob. 18.77PCh. 18 - Prob. 18.78PCh. 18 - Prob. 18.79PCh. 18 - Prob. 18.80PCh. 18 - Prob. 18.81PCh. 18 - Formic acid, HCOOH, the simplest carboxylic acid,...Ch. 18 - Across a period, how does the electronegativity of...Ch. 18 - How does the atomic size of a nonmetal affect the...Ch. 18 - Prob. 18.85PCh. 18 - Prob. 18.86PCh. 18 - Prob. 18.87PCh. 18 - Prob. 18.88PCh. 18 - Choose the stronger acid in each of the following...Ch. 18 - Prob. 18.90PCh. 18 - Prob. 18.91PCh. 18 - Prob. 18.92PCh. 18 - Use Appendix C to choose the solution with the...Ch. 18 - Prob. 18.94PCh. 18 - Prob. 18.95PCh. 18 - Prob. 18.96PCh. 18 - Prob. 18.97PCh. 18 - Prob. 18.98PCh. 18 - Prob. 18.99PCh. 18 - Prob. 18.100PCh. 18 - Prob. 18.101PCh. 18 - Prob. 18.102PCh. 18 - Prob. 18.103PCh. 18 - Prob. 18.104PCh. 18 - Prob. 18.105PCh. 18 - Prob. 18.106PCh. 18 - Prob. 18.107PCh. 18 - What is the pKb of ?
What is the pKa of the...Ch. 18 - Prob. 18.109PCh. 18 - Prob. 18.110PCh. 18 - Prob. 18.111PCh. 18 - Prob. 18.112PCh. 18 - Prob. 18.113PCh. 18 - Prob. 18.114PCh. 18 - Prob. 18.115PCh. 18 - Prob. 18.116PCh. 18 - Prob. 18.117PCh. 18 - Prob. 18.118PCh. 18 - Prob. 18.119PCh. 18 - Prob. 18.120PCh. 18 - Prob. 18.121PCh. 18 - Prob. 18.122PCh. 18 - Prob. 18.123PCh. 18 - Explain with equations and calculations, when...Ch. 18 - Prob. 18.125PCh. 18 - Prob. 18.126PCh. 18 - Rank the following salts in order of increasing pH...Ch. 18 - Rank the following salts in order of decreasing pH...Ch. 18 - Prob. 18.129PCh. 18 - Prob. 18.130PCh. 18 - Prob. 18.131PCh. 18 - Prob. 18.132PCh. 18 - Prob. 18.133PCh. 18 - Prob. 18.134PCh. 18 - Prob. 18.135PCh. 18 - Prob. 18.136PCh. 18 - Prob. 18.137PCh. 18 - Prob. 18.138PCh. 18 - Which are Lewis acids and which are Lewis...Ch. 18 - Prob. 18.140PCh. 18 - Prob. 18.141PCh. 18 - Prob. 18.142PCh. 18 - Prob. 18.143PCh. 18 - Classify the following as Arrhenius,...Ch. 18 - Chloral (Cl3C—CH=O) forms a monohydrate, chloral...Ch. 18 - Prob. 18.146PCh. 18 - Prob. 18.147PCh. 18 - Prob. 18.148PCh. 18 - Prob. 18.149PCh. 18 - Prob. 18.150PCh. 18 - Prob. 18.151PCh. 18 - Prob. 18.152PCh. 18 - Prob. 18.153PCh. 18 - The strength of an acid or base is related to its...Ch. 18 - Prob. 18.155PCh. 18 - Three beakers contain 100. mL of 0.10 M HCl,...Ch. 18 - Prob. 18.157PCh. 18 - Prob. 18.158PCh. 18 - Prob. 18.159PCh. 18 - Prob. 18.160PCh. 18 - Prob. 18.161PCh. 18 - What is the pH of a vinegar with 5.0% (w/v) acetic...Ch. 18 - Prob. 18.163PCh. 18 - Prob. 18.164PCh. 18 - Prob. 18.165PCh. 18 - Prob. 18.166PCh. 18 - Prob. 18.167PCh. 18 - Prob. 18.168PCh. 18 - Prob. 18.169PCh. 18 - Prob. 18.170PCh. 18 - Prob. 18.171PCh. 18 - Prob. 18.172PCh. 18 - Prob. 18.173PCh. 18 - Prob. 18.174PCh. 18 - Prob. 18.175PCh. 18 - Prob. 18.176PCh. 18 - Prob. 18.177PCh. 18 - Prob. 18.178PCh. 18 - Prob. 18.179PCh. 18 - Prob. 18.180PCh. 18 - Prob. 18.181PCh. 18 - Prob. 18.182PCh. 18 - Prob. 18.183PCh. 18 - Drinking water is often disinfected with Cl2,...Ch. 18 - Prob. 18.185P
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