Assertion :Rate of reaction for reactants is negative Reason: The negative sign indicates decrease in concentrations of reactions with time

Both assertion and reason are correct and reason is the correct explains of the assertion

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Both assertion and reason are correct, but reason is not the correct explanation of the assertion

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Assertion is correct, but reason is incorrect

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Assertion is incorrect, but reason is correct

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Solution

The correct option is A Both assertion and reason are correct and reason is the correct explains of the assertion
For a given reaction ; $A \to B$

Rate = $- \frac{d [A]}{d t} = \frac{d [B]}{d t}$

where $- \frac{d [A]}{d t}$ = decrease in concentration of reactant $A$ with time.

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Similar questions

Assertion (A) The enthalpy of reaction remains constant in the presence of a catalyst.

Reason (R) A catalyst participating in the reaction forms different activated complex and lowers down the activation energy but the difference in enrgy of reactant and product remains the same.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

Q. Assertion: In the equation,

y = A sin (k x - ω t)

, particle starts from its mean position

x = 0

and moves towards negative

y -

axis.
Reason: The wave corresponding to given equation is travelling towards positive

x -

direction.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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Assertion :Rate of reaction for reactants is negative Reason: The negative sign indicates decrease in concentrations of reactions with time

The correct option is A Both assertion and reason are correct and reason is the correct explains of the assertionFor a given reaction ; A→BRate = −d[A]dt=d[B]dtwhere −d[A]dt = decrease in concentration of reactant A with time.

The correct option is A Both assertion and reason are correct and reason is the correct explains of the assertion
For a given reaction ; $A \to B$

Rate = $- \frac{d [A]}{d t} = \frac{d [B]}{d t}$

where $- \frac{d [A]}{d t}$ = decrease in concentration of reactant $A$ with time.