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Chemistry for Today: General, Orga...

9th Edition
Spencer L. Seager + 2 others
ISBN: 9781305960060

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BuyFindarrow_forward

Chemistry for Today: General, Orga...

9th Edition
Spencer L. Seager + 2 others
ISBN: 9781305960060
Textbook Problem

A reaction generates chlorine gas ( Cl 2 ) as a product. The reactants are mixed and sealed in a 250 .-mL container. After 30 .0 minutes , 2.97 × 10 2 mol of Cl 2 has been generated. Calculate the average rate of the reaction.

Interpretation Introduction

Interpretation:

The average rate of the given reaction on mixing reactants sealed in a 250.-mL container and measuring the number of moles of Cl2 as 2.97×102mol after 30.0minutes is to be calculated.

Concept introduction:

The average rate of a reaction is defined as the rate of change of concentration of products formed or reactant consumed in a particular time interval. It is given by the formula represented below as,

Rate=ΔCΔt

Explanation

The formula to calculate molarity is given below as,

M=molesofsolutelitersofsolution

Substitute the value of number of moles of Cl2 and volume of container in the above equation as follows.

M=molesofCl2volumeofcontainer=2.97×102mol250mL×1L1000mL=0.1188M

The formula to calculate average rate of a reaction is given below as,

Rate=ΔCΔt

Where,

ΔC is the change in concentration

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