The activation energy of a reaction is zero. The rate constant of reaction:

increases with increase of temperature

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decreases with decrease of temperature

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decreases with increase of temperature

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independent of temperature

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Solution

The correct option is C independent of temperature
According to Arrhenius equation,
$K = A e^{- E_{a} / R T}$
if $E_{0} = 0; K = A$
so K is independent of temperature.

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Similar questions

Which of the following statements are in accordance with the Arrhenius equation?
(a) Rate of a reaction increases with increase in temperature
(b) Rate of a reaction increases with a decrease in activation energy
(c) Rate constant decreases exponentially with an increase in temperature
(d) Rate of reaction decreases with a decrease in activation energy

Q. Assertion :A rate of reaction of most of the reactions doubles, when temperature increased from

298 K

308 K

. Reason: The activation energy of reaction decreases with increase in temperature.

Consider the Arrhenius equation given below and mark the correct option.
$k = A . e - \frac{E_{a}}{R T}$
(a) Rate constant increases exponentially with increasing activation energy and decreasing temperature
(b) Rate constant decreases exponentially with increasing activation energy and decreasing temperature
(c) Rate constant increases exponentially with decreasing activation energy and decreasing temperature
(d) Rate constant increases exponentially with decreasing activation energy and increasing temperature

Q. Assertion: The overall rate of a reversible reaction may decrease with the increase in temperature.
Reason: When the activation energy of a forward reaction is less than that of its backward reaction, then the increase in the rate of the backward reaction is more than that of the forward reaction on increasing the temperature.

Q. Assertion :Observed rate constant of the given reaction given below decreases with temperature.

N O + N O_{f} K_{b} N_{2} O_{2}

N_{2} O_{2} + O_{2} K \to s l o w 2 N O_{2}

2 N O + O_{2} \to 2 N O_{2}

Reason:

K_{c}

of the reaction being exothermic and decrease in

K_{c}

overweigh increase in K with increase in temperature.

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The activation energy of a reaction is zero. The rate constant of reaction:

The correct option is C independent of temperatureAccording to Arrhenius equation,K=Ae−Ea/RT if E0=0;K=A so K is independent of temperature.

The correct option is C independent of temperature
According to Arrhenius equation,
$K = A e^{- E_{a} / R T}$
if $E_{0} = 0; K = A$
so K is independent of temperature.