Which decreases the activation energy?

An increase in the reaction concentration

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An increase in temperature

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A decrease in pressure

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Catalysis

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p H

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Solution

The correct option is D Catalysis
Of the given options, only a catalyst can lower the activation energy by providing a new path for the reaction.

$∴$ Catalyst decreases the activation energy.

Hence the correct option is D.

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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

For which of the following substances, resistance decreases with the increase in temperature?
(a) copper (b) mercury (c) carbon (d) platinum.

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.

Q. The correct statements
A)

p^{H}

of water decreases with increase in temperature
B)

p^{H}

of water remains same with increase in temperature
C)

p^{H}

of water decreases with the addition of acid
D)Degree of dissocation of water is independent of 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

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Which decreases the activation energy?

The correct option is D CatalysisOf the given options, only a catalyst can lower the activation energy by providing a new path for the reaction.∴ Catalyst decreases the activation energy.Hence the correct option is D.

The correct option is D Catalysis
Of the given options, only a catalyst can lower the activation energy by providing a new path for the reaction.

$∴$ Catalyst decreases the activation energy.

Hence the correct option is D.