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2 years ago

For an endothermic reaction, how will the value for Keq change when the temperature is increased?

Chemistry

2 answers:

Nataly [62]2 years ago

4 0

I put the answer <em>C: Keq will increase</em>, on PLATO. Hope this works for you!

Vlada [557]2 years ago

3 0

Answer:

C. Keq will increase

Explanation:

Endothermic means the reaction will <em>absorb heat</em> to occur, hence an increase in temperature will favor the reaction, increasing the formation of products.

Keq is the equilibrium constant of the reaction, and it can be defined as:

$Keq = \frac{concentration of products}{concentration of reactants}$

In an endothermic reaction the equilibrium will be shift towards the formation of products when the temperature is increased, the concentration of products will increase (in relation to the concentration of reactants) ; so as a result the equilibrium constant Keq will also increase.

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Read 2 more answers

Consider the reaction CaCO3(s) --> CaO(s) + CO2(g)

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Answer:

Kc = [CO2], that is to say it is equal to the concentration of CO2

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It is a heterogeneous equilibrium since the substances that participate in the reaction are in different phases

In the heterogeneous limestone decomposition reaction:

CaCO3(s) --> CaO(s) + CO2(g)

The equilibrium constants are:

Kc = [CO2(g)]; Kp = PCO2(g); Kc = Kp (R T)^ −(1−0) = Kp (R T)^ −1

The equilibrium situation is not affected by the amount of solid or liquid, as long as these substances are present.

The equilibrium constant is independent of the amounts of solids and liquids in equilibrium.

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