INTOR TO CHEMISTRY LLF
INTOR TO CHEMISTRY LLF
5th Edition
ISBN: 9781264501731
Author: BAUER
Publisher: MCG
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Chapter 11, Problem 114QP

(a)

Interpretation Introduction

Interpretation:

The mass of silver carbonate formed after the completion of the given chemical reaction is to be determined.

(a)

Expert Solution
Check Mark

Explanation of Solution

Given Information:

The molarity of silver nitrate solution is 0.200M and of sodium carbonate solution is 0.200 M . The volume of sodium carbonate solution is 100 ml and of silver nitrate solution is 100 ml .

Titration is a method to determine the concentration of a substance in the solution by making it react with a solution of known concentration of other substance, just beyond the point where the reaction between both the substances completes. In precipitation reactions, on the reaction of reactants, an insoluble end product is formed which precipitates out from the solution.

The chemical reaction for the formation of silver carbonate on the reaction of silver nitrate and sodium carbonate is,

2AgNO3aq+Na2CO3aqAg2CO3s+2NaNO3aq

Thus, two moles of silver nitrate react with one mole of sodium carbonate to form a mole of silver carbonate.

Convert volume units from milliliters to liters as follows:

1 L=1000 mL1 mL=1 L1000 mL

Convert 100 ml volume of silver nitrate solution from milliliters to liters as follows:

100 mL=1 L1000 mL×100 mL=0.1L

Convert 100 ml volume of sodium carbonate solution from milliliters to liters as follows:

100 mL=1 L1000 mL×100 mL=0.1L

Molarity of the solution M is equal to the ratio of the number of moles n of a solute to the volume V of the solution in litres.

M=nV …… (1)

Substitute M as 0.2 mol L1 and V as 0.1 L in equation (1) to determine the number of moles of silver nitrate as follows:

0.2 mol L1=n0.1Ln=0.2 mol L1×0.1L=0.02 moles

Substitute M as 0.2 mol L1 and V as 0.01 L in equation (1) to determine the number of moles of sodium carbonate as follows:

0.2 mol L1=n0.1 Ln=0.2 mol L1×0.1L=0.02 moles

From the equation, it can be summarized that two moles of silver nitrate react with one mole of sodium carbonate to produce one mole of silver carbonate. Therefore,

2 mol AgNO3 reacts with=1 mol Na2CO30.02 mol AgNO3 reacts with=1 mol Na2CO32 mol AgNO3×0.02 mol AgNO3=0.01 mol Na2CO3

Silver carbonate formed is as follows:

1 mol Na2CO3=1 mol Ag2CO30.01 mol Na2CO3=1 mol Ag2CO31 mol Na2CO3×0.01 mol Na2CO3=0.01 mol Ag2CO3

The molar mass of Ag2CO3 is as follows:

Ag2CO3=2×107.87 g mol1+12 g mol1+3×16 g mol1=275.74 g mol1

The number of moles n of a substance is equal to the ratio of the mass m of that substance to the molar mass MM of the substance.

n=mMM …… (2)

Substitute n as 0.01 moles and MM as 275.74 g mol1 in equation (2) to determine the mass of Ag2CO3 as follows:

0.01 mol=m275.74 g mol1m=0.01 mol×275.74g mol1=2.76 g

Thus, the mass of silver carbonate formed is 2.76 g .

(b)

Interpretation Introduction

Interpretation:

The mass of silver carbonate formed after the completion of the given chemical reaction is to be determined.

(b)

Expert Solution
Check Mark

Explanation of Solution

Given Information:

The molarity of silver nitrate solution is 0.200 M and of sodium carbonate solution is 0.200 M . The volume of sodium carbonate solution is 100 ml and of silver nitrate solution is 200 ml .

The chemical reaction for the formation of silver carbonate on the reaction of silver nitrate and sodium carbonate is,

2AgNO3aq + Na2CO3aqAg2CO3s+2NaNO3aq

Thus, two moles of silver nitrate react with one mole of sodium carbonate to form a mole of silver carbonate.

Convert volume units from milliliters to liters as follows:

1 L=1000 mL1 mL=1 L1000 mL

Convert 200 ml volume of silver nitrate solution from milliliters to liters as follows:

200 mL=1 L1000 mL×200 mL=0.2L

Convert 100 ml volume of sodium carbonate solution from milliliters to liters as follows:

100 mL=1 L1000 mL×100 mL=0.1L

Substitute M as 0.2 mol L1 and V as 0.2 L in equation (1) to determine the number of moles of silver nitrate as follows:

0.2 mol L1=n0.2Ln=0.2 mol L1×0.2L=0.04 moles

Substitute M as 0.2 mol L1 and V as 0.01 L in equation (1) to determine the number of moles of sodium carbonate as follows:

0.2 mol L1=n0.1 Ln=0.2 mol L1×0.1L=0.02 moles

From the equation, it can be summarized that two moles of silver nitrate react with one mole of sodium carbonate to produce one mole of silver carbonate.

2 mol AgNO3 reacts with=1 mol Na2CO30.04 mol AgNO3 reacts with=1 mol Na2CO32 mol AgNO3×0.04 mol AgNO3=0.02 mol Na2CO3

Silver carbonate formed is as follows:

1 mol Na2CO3=1 mol Ag2CO30.02 mol Na2CO3=1 mol Ag2CO31 mol Na2CO3×0.02 mol Na2CO3=0.02 mol Ag2CO3

The molar mass of Ag2CO3 is as follows:

Ag2CO3=2×107.87 g mol1+12 g mol1+3×16 g mol1=275.74 g mol1

Substitute n as 0.02 moles and MM as 275.74 g mol1 in equation (2) to determine the mass of Ag2CO3 as follows:

0.02 mol=m275.74 g mol1m=0.02 mol×275.74g mol1=5.52 g

Thus, the mass of silver carbonate formed is 5.52 g .

(c)

Interpretation Introduction

Interpretation:

The mass of silver carbonate formed after the completion of the given chemical reaction is to be determined.

(c)

Expert Solution
Check Mark

Explanation of Solution

Given Information:

The molarity of silver nitrate solution is 0.200 M and of sodium carbonate solution is 0.200 g . The volume of sodium carbonate solution is 200 ml and of silver nitrate solution is 100 ml .

The chemical reaction for the formation of silver carbonate on the reaction of silver nitrate and sodium carbonate is,

2AgNO3aq + Na2CO3aqAg2CO3s+2NaNO3aq

Thus, two moles of silver nitrate react with one mole of sodium carbonate to form a mole of silver carbonate.

Convert volume units from milliliters to liters as follows:

1 L=1000 mL1 mL=1 L1000 mL

Convert 100 ml volume of silver nitrate solution from milliliters to liters as follows:

100 mL=1 L1000 mL×100 mL=0.1L

Convert 200 ml volume of sodium carbonate solution from milliliters to liters as follows:

200 mL=1 L1000 mL×200 mL=0.2L

Substitute M as 0.2 mol L1 and V as 0.1 L in equation (1) to determine the number of moles of silver nitrate as follows:

0.2 mol L1=n0.1Ln=0.2 mol L1×0.1L=0.02 moles

Substitute M as 0.2 mol L1 and V as 0.02 L in equation (1) to determine the number of moles of sodium carbonate as follows:

0.2 mol L1=n0.2 Ln=0.2 mol L1×0.2L=0.04 moles

From the equation, it can be summarized that two moles of silver nitrate react with one mole of sodium carbonate to produce one mole of silver carbonate.

2 mol AgNO3 reacts with=1 mol Na2CO30.02 mol AgNO3 reacts with=1 mol Na2CO32 mol AgNO3×0.02 mol AgNO3=0.01 mol Na2CO3

Silver carbonate formed is as follows:

1 mol Na2CO3=1 mol Ag2CO30.01 mol Na2CO3=1 mol Ag2CO31 mol Na2CO3×0.01 mol Na2CO3=0.01 mol Ag2CO3

The molar mass of Ag2CO3 is as follows:

Ag2CO3=2×107.87 g mol1+12 g mol1+3×16 g mol1=275.74 g mol1

Substitute n as 0.01 moles and MM as 275.74 g mol1 in equation (2) to determine the mass of Ag2CO3 as follows:

0.01 mol=m275.74 g mol1m=0.01 mol×275.74g mol1=2.76 g

Thus, the mass of silver carbonate formed is 2.76 g .

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Chapter 11 Solutions

INTOR TO CHEMISTRY LLF

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