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A colliison between reactant molecules must occur with a certain minimum energy before it is effective in yielding Product molecules. This minimum energy is called activation energy `E_(a)` Large the value of activation energy, smaller the value of rate constant `k`. Larger is the value of activation energy, greater is the effect of temperature rise on rate constant `k`. `E_(f) =` Activation energy of forward reaction `E_(b) =` Activation energy of backward reaction `Delta H = E_(f) - E_(b)` `E_(f) =` threshold energy If a reaction `A + B rarr C` is exothermic to the extent `30 kJ mol^(-1)` and the forward reaction has an activation energy of `249 kJ mol^(-1)` the activation energy for reverse reaction in `kJ mol^(-1)` isA. 324B. 279C. 40D. 100 |
Answer» Correct Answer - D | |