INTRO. TO CHEM LOOSELEAF W/ALEKS 18WKCR
INTRO. TO CHEM LOOSELEAF W/ALEKS 18WKCR
5th Edition
ISBN: 9781264125609
Author: BAUER
Publisher: MCG
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Chapter 14, Problem 108QP

(a)

Interpretation Introduction

Interpretation:

Whether the statement, “The water is present at the side of the equilibrium and has a coefficient of 6 � is correct or not is to be identified.

(a)

Expert Solution
Check Mark

Explanation of Solution

The ionic skeleton chemical equation for the given reaction is shown in equation (1).

I2s+NO3aqHIO3+NO2g......1

The oxidation numbers of all the atoms in equation (1) that undergo a redox reaction have been assigned and shown in equation (2).

I02s+N+5O3aqHI+5O3+N+4O2g......2

To balance the iodine atom on both sides of equation (2), 2 is used as a coefficient for HIO3 .

I02s+N+5O3aq2HI+5O3+N+5O2g......3

Equation (4) represents the oxidation half-reaction and equation (5) represents the reduction half-reaction.

I02s2HI+5O3aq+10e......4N+5O3aq+eN+4O2g......5

In equation (6), equation (5) is multiple by 10 and added to equation (4).

I02s2HI+5O3aq+10e......410N+5O3aq+10e10N+4O2g......6¯I02s+10N+5O3aq2I+5O3aq+10N+4O2g......7

To balance the negative charges on both sides, 10 H+ ions are added to the left side of equation (7).

I02s+10N+5O3aq+10H+aq2HI+5O3aq+10N+4O2g......8

To balance the H+ ions on both sides, 4 water molecules are added to the right side of the equation (8).

I02s+10N+5O3aq+10H+aq2HI+5O3aq+10N+4O2g+4H2Ol......9

According to equation (9), H2Ol is on the right side of the reaction and has a coefficient of 4 . The coefficient of NO2g is 10 , the number of H+ ion on the left side of the reaction is 10 , the coefficient of NO3 is 10 , and a total of 10e are transferred in the given reaction.

Option (A) is incorrect because according to equation (9), H2Ol is on the right side of the reaction and has a coefficient of 4 .

(b)

Interpretation Introduction

Interpretation:

Whether the statement, “The coefficient of NO2g is 5 � is correct or not is to be identified.

(b)

Expert Solution
Check Mark

Explanation of Solution

Option (B) is incorrect because according to equation (9), the coefficient of NO2g is 10 .

(c)

Interpretation Introduction

Interpretation:

Whether the statement, “ H+aq is present at the side of the equilibrium and has a coefficient of 10 � is correct or not is to be identified.

(c)

Expert Solution
Check Mark

Explanation of Solution

Option (C) is correct because according to equation (9), the coefficient of H+aq is 10 .

(d)

Interpretation Introduction

Interpretation:

Whether the statement, “The coefficient of NO3aq is 5 � is correct or not is to be identified.

(d)

Expert Solution
Check Mark

Explanation of Solution

Option (D) is incorrect because according to equation (9), the coefficient of NO3aq is 10 .

(e)

Interpretation Introduction

Interpretation:

Whether the statement, “Five electrons are transferred in the reaction for every molecule of I2 � is correct or not is to be identified.

(e)

Expert Solution
Check Mark

Explanation of Solution

Option (E) is incorrect because a total of 10 e are transferred for every I2 molecule in the given reaction.

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Chapter 14 Solutions

INTRO. TO CHEM LOOSELEAF W/ALEKS 18WKCR

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