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Q.

Consider the following plots of rate constant(k) versus  1Tfor four different reactions(a,b,c & d). Which of the following orders is correct for the activation energies of these reactions?

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a

Ea > Ec > Ed > Eb

b

Ec > Ea > Ed > Eb

c

Eb > Ea > Ed > Ec

d

Eb > Ed > Ec > Ea

answer is B.

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Detailed Solution

k=AeEa/RTArrheneous equation

logk=logAEaRT

Roughly, K depends on activation energy (Ea)

AE=Ec>Ea>Ed>Eb

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