MCQ
Which one of the following is the most basic compound :
- A$C_6H_5-NH_2$
- B$C_6H_5-NHCH_3$
- C$C_6H_5-N(CH_3)_2$
- ✓$C_6H_5N(C_2H_5)_2$
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$\mathrm{A}+\mathrm{B} \rightarrow \mathrm{C}$
$\text { rate }=\mathrm{k}[\mathrm{A}]^{1 / 2}[\mathrm{~B}]^{1 / 2}$
The reaction is initiated by taking $1 \mathrm{M}$ concentration $A$ and $B$ each. If the rate constant $(k)$ is $4.6 \times 10^{-2} \mathrm{~s}^{-1}$, then the time taken for $\mathrm{A}$ to become $0.1 \mathrm{M}$ is . . . . . . . . . . sec. (nearest integer)