Question
Thu January 20, 2011 By: Kevin Joe

The rate of a gaseous reaction is given by r = [A][B]. The volume of the reaction vessel containing these gases is suddenly reduced to 1/4 of the initial volume. what is the rate of the reaction as compared with the original rate?

Expert Reply
Thu January 20, 2011
Dear Student
 
For the reaction we must see the number of the moles on both sides of the reaction. An increase in system pressure due to decreasing volume causes the reaction to shift to the side with the fewer moles of gas. 
 
A decrease in pressure due to increasing volume causes the reaction to shift to the side with more moles of gas.
 
There is no effect on a reaction where the number of moles of gas is the same on each side of the chemical equation.
 
We hope that clarifies your query.
regards
Team
Topperlearning
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