CHEMISTRY: THE MOLECULAR NATURE OF MATTE
CHEMISTRY: THE MOLECULAR NATURE OF MATTE
9th Edition
ISBN: 9781265974688
Author: SILBERBERG
Publisher: MCG
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Chapter 18, Problem 18.147P

(a)

Interpretation Introduction

Interpretation:

The disinfectant phenol (C6H5OH) has pKa of 10.0 in water but 14.4 in methanol.  The reason has to be given for the different pKa values of phenol.

Concept Introduction:

The dissociation of an acid can be given as

  HA + H2OA- + H3O+

The relationship between pKa and Ka can be given as

  Ka = [H+][A-] / [HA]pKa= -log KapH = pKa = -logKa

The pKa value increases with decrease in Ka or the molarity of acid.

The pKa value decreases with increase in Ka or the molarity of acid.

(b)

Interpretation Introduction

Interpretation:

The disinfectant phenol (C6H5OH) has pKa of 10.0 in water but 14.4 in methanol.  Methanol is stronger or weaker base than water has to be given.

Concept Introduction:

The dissociation of an acid can be given as

  HA + H2OA- + H3O+

The relationship between pKa and Ka can be given as

  Ka = [H+][A-] / [HA]pKa= -log KapH = pKa = -logKa

The pKa value increases with decrease in Ka or the molarity of acid.

The pKa value decreases with increase in Ka or the molarity of acid.

(c)

Interpretation Introduction

Interpretation:

The dissociation reaction of phenol in methanol has to be written.

Concept Introduction:

Dissociation reaction:

A chemical reaction in which a compound breaks into two or more parts is said to be a dissociation reaction.

  ABA+B

(d)

Interpretation Introduction

Interpretation:

The expression for the autoionization constant of methanol has to be written.

Concept Introduction:

Autoionization reaction:

The reaction that occurs between the molecules of same compound to produce ions without addition of any external reagent is said to be autoionization reaction.

Example:

Autoionization of water can be given as

  H2O + H2 H3O+ + OH-

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Chapter 18 Solutions

CHEMISTRY: THE MOLECULAR NATURE OF MATTE

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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