For a certain reaction the change in enthalpy is 508 KJ. How doesthe equilibrium

Question

For a certain reaction the change in enthalpy is 508 KJ. How doesthe equilibrium constant for the reaction change with temp?
a) it will increase because the rate of the backward reaction willincrease with increase in temp.
b) it will decrease because the backwards reaction rate decreasesas temp increases.
c) it will decrease because the forward reaction rate increaseswith increase in temp.
d) it will increase because the forward reaction rate increases astemp increases!

plz explain why also.
thx

Explanation / Answer

The change in entalphy is 508 kJ, meaning this reaction isENDOTHERMIC. According to Le Chatelier Principle, when any disturbance isapplied to a system, the system will react in a manner such as tominimize the change. For endothermic reaction, an increase in temperature can beminimized by utilizing some of the heat to convert reactants toproducts. This results in shifting the equilibrium to the right side of thereaction. As a result, the value of K. So, the answer is d) it will increase because the forwardreaction rate increases as temp increases!

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