MCQ
Product is obtained in the above reaction is


- A$R - CO_2Na$
- B

- ✓Both $(a)$ and $(b)$
- DNone of these


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$4H_{(g)} \rightarrow 2H_{2(g)}$ is $-869.6\ kJ$
The dissociation energy of $H - H$ bond is ............ $\mathrm{kJ}$
| Substance | $H _{2}$ | $C ($ graphite $)$ | $C _{2} H _{6}( g )$ |
| $\frac{\Delta_{ C } H ^{\Theta}}{ kJmol ^{-1}}$ | $-286.0$ | $-394.0$ | $-1560.0$ |
The enthalpy of formation of ethane is ........ .