MCQ
The dimension of rate constant of a second order reaction involves
- ANeither time nor concentration
- BOnly time
- ✓Time and concentration
- DTime and square of concentration
Rate Law for this Reaction is given by : Rate $= k [ A ]^2$
$\because$ Unit of Rate of Reaction is $mol \,litre { }^{-1} \,\sec ^{-1}$ and Unit of Concentration is $mol\, litre ^{-1}$
$\therefore$ Unit of Rate constant is $mol ^{-1}\, litre\,sec ^{-1}$
$\Rightarrow$ Unit of Rate constant is $\left( mol \text { litre }^{-1}\right)^{-1}\, sec ^{-1}$
Unit of Rate constant is $(concentration) { }^{-1} \,\sec ^{-1}$
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| Element | Electronic configuration |
| $X$ | $1s^2\,2s^2\,2p^2$ |
| $Y$ | $1s^2\,2s^2\,2p^6\,3s^1$ |
| $Z$ | $1s^2\,2s^2\,2p^6\,3s^2\,3p^6\,3d^{10}\,4s^2\,4p^5$ |
Which set of properties match correctly with properties of the hydrides of these elements
$(I)$ $C{H_2} = CH\mathop C\limits^ + HC{H_3}$
$\begin{array}{*{20}{c}} {{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\ {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,} \\ {(II)\,\,\,\,\,\,\,\,\,\,C{H_2} = C - \mathop {{\text{ }}C}\limits^ + {H_2}} \end{array}$
$(III)$ $C{H_3}CH = CH\mathop C\limits^ + {H_2}$