Which is correct about zero order reaction
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(a) Rate of reaction depends on decay constant (b) Rate of reaction is independent of concentration (c) Unit of rate constant is concentration⁻¹ (d) Unit […]
The unit of second order reaction rate constant is
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(a) L⁻¹ mol s⁻¹ (b) L² mol⁻² s⁻¹ (c) L mol⁻¹ s⁻¹ (d) s⁻¹
Correct Answer:
L mol⁻¹ s⁻¹
Explanation:
For a second […]
For a first order reaction, the time taken to reduce the initial concentration by a factor of 1/4 is 20 minutes. The time required to reduce initial concentration by a factor of 1/16 is
The half-life of a reaction is inversely proportional to the square of the initial concentration of the reactant. Then the order of the reaction is
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(a) 0 (b) 1 (c) 2 (d) 3
If the initial concentration of the reactant is doubled, the time for half reaction is also doubled. Then the order of the reaction is
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(a) zero (b) fraction (c) three (d) one
A substance with initial concentration of a mol dm⁻³ follows zero order kinetics. The time is takes for the completion of the reaction is (k = rate constant)
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(a) k/a (b) a/2k […]
During the decomposition of H₂O₂ to give oxygen, 48 g O₂ is formed per minute at a certain point of time. The rate of formation of water at this point is
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(a) […]
75% of a first order reaction was completed in 32 min.When was 50% of the reaction completed
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(a) 16 min (b) 24 min (c) 8 min (d) 4 min
Correct Answer:
16 […]
The activation energy of a reaction at a given temperature is found to be 2.303 RT J mol⁻¹.The ratio of rate constant to the Arrhenius factor is
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(a) 0.01 (b) 0.1 (c) 0.02 […]
Temperature coefficient of a reaction is 2. When temperature is increased from 30⁰C to 100⁰C, rate of the reaction increases by
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(a) 128 times (b) 100 times (c) 500 times (d) 250 […]
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