In which of the following, $E_{a}$ for backward reaction is greater than $E_{a}$ for forward reaction?

A E_{a} = 50 k c a l - ------ \to B; Δ H = - 10 k c a l

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A E_{a} = 50 k c a l - ------ \to B; Δ H = + 10 k c a l

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A E_{a} = 60 k c a l - ------ \to B; Δ H = + 20 k c a l

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All of the above

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Solution

The correct option is A $A E_{a} = 50 k c a l - ------ \to B; Δ H = - 10 k c a l$
$E_{b} > E_{f}$ only if reaction is exothermic $(Δ H < 0)$

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Similar questions

Q. In which of the following,

E a

for backward reaction is greater than

E a

for forward reaction?

Q. In which of the following case,

E_{a}

of the backward reaction is greater than that of the forward reaction?

For an endothermic reaction, energy of activation is $E_{a}$ and enthalpy of reaction is $Δ H$ (both of these in kJ/mol). Minimum value of $E_{a}$ will be:

Q. Assertion :

E_{a}

of the forward reaction is higher than that of backward reaction in a reversible endothermic reaction. Reason: Increasing the temperature of the substance increases the fraction of molecules which collide with energies greater than

E_{a}

For an endothermic reaction, energy of activation is $E_{a}$ and enthalpy of reaction is $Δ H$ (both of these in kJ/mol). Minimum value of $E_{a}$ will be:

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In which of the following, Ea for backward reaction is greater than Ea for forward reaction?

The correct option is A AEa = 50kcal−−−−−−−→B; ΔH=−10kcalEb>Ef only if reaction is exothermic (ΔH<0)

In which of the following, $E_{a}$ for backward reaction is greater than $E_{a}$ for forward reaction?

The correct option is A $A E_{a} = 50 k c a l - ------ \to B; Δ H = - 10 k c a l$
$E_{b} > E_{f}$ only if reaction is exothermic $(Δ H < 0)$