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How will the reaction equilibrium be affected by an increase in temperature for the following reaction?
H2O2(l) <--> H2(g) + O2(g)    DH = +187 kJ



A. It will shift to the right
B. It will shift to the left
C. There will be no change

This question is part of LeChateliers Principle
Asked by Lblank, Last updated: May 21, 2020

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3 Answers

raszagil

Raszagil

Answered Mar 25, 2017

Should shift to the right, endothermic reaction because of the +187 kJ. Per Le Chatelier's Principle, an increase in the temperature of the system causes equilibrium to shift away from the heat to balance out the reaction.

The trick is figuring out if the reaction is endothermic or exothermic. If you have a + kj value, then your reaction should be endothermic, and the energy is on the reactant side because it is being absorbed. If you have a - kj value, then your reaction is exothermic.

This question was marked wrong. :(
 

future.oylmpian

Future.oylmpian

Answered Jan 08, 2017

Is this not a shift to the right? Because it is endothermic?
 

John Smith

John Smith

Answered Dec 29, 2016

It will shift to the left
 

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