Question

Assertion :Statement-I : The order of reaction can have fractional value
Reason: Statement-II : For an elementary reaction, the partial orders are determined by the reaction stoichiometry.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

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

Order of reaction is experimentally determined and can be fractional.

For example:

$2HgC{l}_2\left(aq\right)+C_2{O}_4^{2-}\left(aq\right)\to 2Cl-\left(aq\right)+2C{O}_2\left(g\right)+H{g}_{2}C{l}_2\left(s\right)$

has the observed rate equation[2]

$r=k\left[HgC{l}_2{]}^1\right[C_2{O}_4^{2-}{]}^2$

For an elementary reaction, the partial orders are determined by the reaction stoichiometry.

Hence, option B is correct