MCQ
The paramagnetic nature of oxygen can be explained by
- ALewis-Langmuir concept
- BElectron-octet concept
- CElectron affinity concept
- ✓Molecular orbital concept
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| Process | $\Delta H / kJ\,mol ^{-1}$ | $\Delta S / J K^{-1}$ |
| $A$ | $-25$ | $-80$ |
| $B$ | $-22$ | $40$ |
| $C$ | $25$ | $-50$ |
| $D$ | $22$ | $20$ |
The number of non-spontaneous process from the following is $.....$
Product $Z$ is
$C{H_3}COOH + {H_2}O \rightleftharpoons C{H_3}CO{O^ - } + {H_3}{O^ + }$ is $1.8 \times 10^{-5}$, equilibrium constant for
$C{H_3}COOH + O{H^ - } \rightleftharpoons C{H_3}CO{O^ - } + {H_2}O$
$2 C ( s )+ H _2( g ) \longrightarrow C _2 H _2( g ) \ \ \ \ \ \Delta H =225 \ kJ mol ^{-1} $
$2 C ( s ) \longrightarrow 2 C ( g )\ \ \ \ \ \ \Delta H =1410 \ kJ mol ^{-1} $
$H _2( g ) \longrightarrow 2 H ( g ) \ \ \ \ \ \ \Delta H =330 \ kJ mol ^{-1}$
$\begin{array}{*{20}{c}}
{{{\left( {{C_2}{H_5}} \right)}_2}NC{H_2}CH \cdot COOH} \\
{\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,Cl}
\end{array}$
is :