Assertion :For a chemical reaction with rise in temperature by $10^{\circ} C$ , the rate constant is nearly doubled. Reason: At $t + 10$ , the fraction of molecules having energy equal to or greater than activation energy gets doubled.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
For a chemical reaction with the rise in $10^{0} c$ the fraction of molecules having energy equal or greater than activation energy is doubled and hence the rate of reaction is doubled or we may say rate constant is doubled.
so, both reason and assertion are correct and the reason is the correct explanation of assertion.

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Similar questions

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.

(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) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

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.

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

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

Assertion: Be and Al have similar properties.

Reason: $B e^{2 +}$ and $A l^{3 +}$ have nearly the same charge/volume ratios and similar polarising power.

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Assertion :For a chemical reaction with rise in temperature by 10∘C, the rate constant is nearly doubled. Reason: At t+10, the fraction of molecules having energy equal to or greater than activation energy gets doubled.

Assertion :For a chemical reaction with rise in temperature by $10^{\circ} C$ , the rate constant is nearly doubled. Reason: At $t + 10$ , the fraction of molecules having energy equal to or greater than activation energy gets doubled.