Problem: Four substances (HCl, I 2, HI, and Cl 2) are mixed in a reaction vessel and allowed to reach equilibrium in the following reaction:2 HCl (g) + I 2 (s) ⇋ 2 HI (g) + Cl 2 (g)Certain change is then made to this mixture. Considering the change, select the effect (increase, decrease, or no change) that the change has on the original equilibrium value of the quantity. The temperature and volume are constant, unless otherwise specified. This reaction is exothermic. Please circle the letter of the correct answer.Change: Add inert gas          Quantity: amount of HCl (g)          Effect:a. increasesb. decreasesc. no change

FREE Expert Solution

We are asked to identify the effect of adding an inert gas to the amount of HCl(g).

An inert gas represents a non-reactive gas usually in the form of a noble gas. 

When an inert gas is added under constant temperature there will be no shift in the equilibrium position.  

Inert-Gas-Le-Chatelier-Principle-Constant-Temperature


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Problem Details

Four substances (HCl, I 2, HI, and Cl 2) are mixed in a reaction vessel and allowed to reach equilibrium in the following reaction:

2 HCl (g) + I 2 (s) ⇋ 2 HI (g) + Cl 2 (g)

Certain change is then made to this mixture. Considering the change, select the effect (increase, decrease, or no change) that the change has on the original equilibrium value of the quantity. The temperature and volume are constant, unless otherwise specified. This reaction is exothermic. Please circle the letter of the correct answer.

Change: Add inert gas          Quantity: amount of HCl (g)          Effect:

a. increases

b. decreases

c. no change

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Our tutors have indicated that to solve this problem you will need to apply the Le Chatelier's Principle concept. You can view video lessons to learn Le Chatelier's Principle . Or if you need more Le Chatelier's Principle practice, you can also practice Le Chatelier's Principle practice problems.