MCQ
Correct order of nucleophilicity for $SN^2$ reaction
- A$\bar OH > {H_2}O > C{H_3}CO{O^ - }$
- ✓$\bar OH > C{H_3}CO{O^ - } > {H_2}O$
- C${H_2}O > C{H_3}CO{O^ - } > \bar OH$
- D${H_2}O = \bar OH = C{H_3}CO{O^ - }$
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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 $.....$
