1.

Assertion : rate of reaction doubles when the concentration of the reactant is doubles if it is a first order reaction. Reason : rate constant also doubles

Answer»

if both ASSERTION and reason are true and reason is the correct explanation of assertion
if both assertion and reason are true but reason is not the correct explanation of assertion
assertion is true but reason is false
both assertion and reason are false

Solution :HINT : For a first reaction, when the concentration of REACTANT is doubled, then the rate of reaction also doubled.
Rate constant is indepened of concentration and is a constant at a constant temperature i.e., it DEPENDS on the temperature and hence, it will not be doubled and when the concentration of the reactant is doubled.


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