CHEMISTRY (PB)-TEXT
CHEMISTRY (PB)-TEXT
5th Edition
ISBN: 9780393615135
Author: Gilbert
Publisher: NORTON
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Chapter 16, Problem 16.83QP
Interpretation Introduction

Interpretation: The pH of the given concentration of Fe(NO3)3 is to be calculated.

Concept introduction: The acid dissociation constant is calculated by the formula,

Ka=[Fe(H2O)5(OH)2+][H+][Fe(H2O)63+]

The pH of the solution is calculated by the formula,

pH=log[H+]

To determine: The pH of the given concentration of Fe(NO3)3 .

Expert Solution & Answer
Check Mark

Answer to Problem 16.83QP

Solution:

The pH of the given concentration of Fe(NO3)3 is 1.76_ .

Explanation of Solution

Given

The concentration of Fe(NO3)3 is 0.100M .

Ferric nitrate on dissolving in the aqueous solution causes the formation of ferric and nitrate ions.

Ferric ion in the aqueous solution is surrounded by the six water molecules. Therefore concentration of Fe(NO3)3 and Fe(H2O)63+ is same.

Ferric ion due to its positive charge extracts the hydroxide ion of one of the water molecules to form a proton. Therefore, ferric ion forms an acidic solution in water.

Fe(H2O)63+Fe(H2O)5(OH)2++H+

The acid dissociation constant, Ka of Fe(H2O)63+ is 3×103 .

The acid dissociation constant is calculated by the formula,

Ka=[Fe(H2O)5(OH)2+][H+][Fe(H2O)63+]

The concentration of Fe(H2O)5(OH)2+ ion and H+ is same.

Therefore, the above equation becomes,

Ka=[H+]2[Fe(H2O)63+]

Substitute the value of Ka and [Fe(H2O)63+] in the above equation.

3×103=[H+]20.100M[H+]2=3×103×0.100=3×104[H+]=1.73×102

The pH of the solution is calculated by the formula,

pH=log[H+]

Substitute the value of [H+] in the above equation.

pH=log(1.73×102)=1.76_

Therefore, the pH of the given concentration of Fe(NO3)3 is 1.76_ .

Conclusion:

The pH of the given concentration of Fe(NO3)3 is 1.76_

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Chapter 16 Solutions

CHEMISTRY (PB)-TEXT

Ch. 16.4 - Prob. 11PECh. 16.4 - Prob. 12PECh. 16.5 - Prob. 13PECh. 16.6 - Prob. 14PECh. 16.8 - Prob. 15PECh. 16.8 - Prob. 16PECh. 16.8 - Prob. 17PECh. 16.8 - Prob. 18PECh. 16.8 - Prob. 19PECh. 16 - Prob. 16.1VPCh. 16 - Prob. 16.2VPCh. 16 - Prob. 16.3VPCh. 16 - Prob. 16.4VPCh. 16 - Prob. 16.5VPCh. 16 - Prob. 16.6VPCh. 16 - Prob. 16.7VPCh. 16 - Prob. 16.8VPCh. 16 - Prob. 16.9VPCh. 16 - Prob. 16.10VPCh. 16 - Prob. 16.11QPCh. 16 - Prob. 16.12QPCh. 16 - Prob. 16.13QPCh. 16 - Prob. 16.14QPCh. 16 - Prob. 16.15QPCh. 16 - Prob. 16.16QPCh. 16 - Prob. 16.17QPCh. 16 - Prob. 16.18QPCh. 16 - Prob. 16.19QPCh. 16 - Prob. 16.20QPCh. 16 - Prob. 16.21QPCh. 16 - Prob. 16.22QPCh. 16 - Prob. 16.23QPCh. 16 - Prob. 16.24QPCh. 16 - Prob. 16.25QPCh. 16 - Prob. 16.26QPCh. 16 - Prob. 16.27QPCh. 16 - Prob. 16.28QPCh. 16 - Prob. 16.29QPCh. 16 - Prob. 16.30QPCh. 16 - Prob. 16.31QPCh. 16 - Prob. 16.32QPCh. 16 - Prob. 16.33QPCh. 16 - Prob. 16.34QPCh. 16 - Prob. 16.35QPCh. 16 - Prob. 16.36QPCh. 16 - Prob. 16.37QPCh. 16 - Prob. 16.38QPCh. 16 - Prob. 16.39QPCh. 16 - Prob. 16.40QPCh. 16 - Prob. 16.41QPCh. 16 - Prob. 16.42QPCh. 16 - Prob. 16.43QPCh. 16 - Prob. 16.44QPCh. 16 - Prob. 16.45QPCh. 16 - Prob. 16.46QPCh. 16 - Prob. 16.47QPCh. 16 - Prob. 16.48QPCh. 16 - Prob. 16.49QPCh. 16 - Prob. 16.50QPCh. 16 - Prob. 16.51QPCh. 16 - Prob. 16.52QPCh. 16 - Prob. 16.53QPCh. 16 - Prob. 16.54QPCh. 16 - Prob. 16.55QPCh. 16 - Prob. 16.56QPCh. 16 - Prob. 16.57QPCh. 16 - Prob. 16.58QPCh. 16 - Prob. 16.59QPCh. 16 - Prob. 16.60QPCh. 16 - Prob. 16.61QPCh. 16 - Prob. 16.62QPCh. 16 - Prob. 16.63QPCh. 16 - Prob. 16.64QPCh. 16 - Prob. 16.65QPCh. 16 - Prob. 16.66QPCh. 16 - Prob. 16.67QPCh. 16 - Prob. 16.68QPCh. 16 - Prob. 16.69QPCh. 16 - Prob. 16.70QPCh. 16 - Prob. 16.71QPCh. 16 - Prob. 16.72QPCh. 16 - Prob. 16.73QPCh. 16 - Prob. 16.74QPCh. 16 - Prob. 16.75QPCh. 16 - Prob. 16.76QPCh. 16 - Prob. 16.77QPCh. 16 - Prob. 16.78QPCh. 16 - Prob. 16.79QPCh. 16 - Prob. 16.80QPCh. 16 - Prob. 16.81QPCh. 16 - Prob. 16.82QPCh. 16 - Prob. 16.83QPCh. 16 - Prob. 16.84QPCh. 16 - Prob. 16.85QPCh. 16 - Prob. 16.86QPCh. 16 - Prob. 16.87QPCh. 16 - Prob. 16.88QPCh. 16 - Prob. 16.89QPCh. 16 - Prob. 16.90QPCh. 16 - Prob. 16.91QPCh. 16 - Prob. 16.92QPCh. 16 - Prob. 16.93QPCh. 16 - Prob. 16.94QPCh. 16 - Prob. 16.95QPCh. 16 - Prob. 16.96QPCh. 16 - Prob. 16.97QPCh. 16 - Prob. 16.98QPCh. 16 - Prob. 16.99QPCh. 16 - Prob. 16.100QPCh. 16 - Prob. 16.101QPCh. 16 - Prob. 16.102QPCh. 16 - Prob. 16.103QPCh. 16 - Prob. 16.104QPCh. 16 - Prob. 16.105QPCh. 16 - Prob. 16.106QPCh. 16 - Prob. 16.107QPCh. 16 - Prob. 16.108QPCh. 16 - Prob. 16.109QPCh. 16 - Prob. 16.110QPCh. 16 - Prob. 16.111APCh. 16 - Prob. 16.112APCh. 16 - Prob. 16.113APCh. 16 - Prob. 16.114APCh. 16 - Prob. 16.115APCh. 16 - Prob. 16.116APCh. 16 - Prob. 16.117APCh. 16 - Prob. 16.118AP
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