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The rate of a reaction increases on incr...

The rate of a reaction increases on increasing the temperature.

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Assertion: A catalyst increases the rate of a given reaction by greater factor if added at lower temperature than at higher temperature. Reason Rate of reaction always increases on increasing temperature.

Knowledge Check

  • The rate of a reaction A doubles on increasing the temperature from 300 to 310 K. By how much, the temperature of reaction B should be increased from 300 K so that rate doubles if activation energy of the reaction B is twice to that of reaction A

    A
    4.92K
    B
    9.84K
    C
    19.67K
    D
    2.45K

  • Assertion (A): The rate of reaction increases with increase in temperature. Reason (R): The reactant molecules collide less frequency.

    A
    Both A and R are true and R is the correct explanation for A
    B
    Both A and R are true but R is NOT the correct explanation of A
    C
    A is true but R is false
    D
    A is false and R is true

  • The rate of reaction increases by the increase of temperature because

    A
    colliison frequency is increased.
    B
    Energy Products decreases.
    C
    Fraction of molecules possesisng energy `ge E_(T)` (threshold energy) increases.
    D
    Meachanism of a reaction is changed.

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    Statement: The rate of a chemical reaction increases as the temperature is increased. Explanation: The collision frequency between the reactant molecules increases on increasing the temperature.

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    Assertion : All molecules collisions lead to the formation of products. Reason : Reactant molecules undergo chemical change irrespective of their collision. Assertion : Rate of reaction increases with increase in temperature . Reason : Number of effective collisions increases with increase in temperature.

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