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Chemistry Question

Chemistry Question

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Step 1

The reaction given is 

H2 + I2 -----> 2 HI 

Given : Initial moles of H2 = 0.7 

initial moles of HI = 0.5 

And volume of flask = 250 mL = 0.25 L                                                 ( since 1 L = 1000 mL)

Hence initial concentration of gases are 

Chemistry homework question answer, step 1, image 1

Step 2

Assuming y concentration of I2 is formed from HI as per the reaction to reach equilibrium.

Hence concentration of H2 formed is also y.

And concentration of HI reacted = 2 y

Hence final equilibrium concentration of gases are 

[HI] = initial - reacted = 2 - 2y

[H2 ] = initial + formed = 2.8 + y 

[I2 ] = initial + formed = 0 + y = y 

 

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