MCQ
Silver nitrate solution is kept in brown bottles in laboratory because
- Ait reacts with ordinary white bottles
- ✓brown bottles cut the passage of light through
- Cbrown bottles do not react with it
- Dordinary bottles catalyse its decomposition
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$(a)$ $C{H_3} - \mathop C\limits^ \oplus H - C{H_3}$
$(b)$ $C{H_3} - \mathop C\limits^ \oplus H - OC{H_3}$
$(c)$ $C{H_3} - \mathop C\limits^ \oplus H - CO - C{H_3}$
$(I)$ ${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(l);$
$\Delta {H^o_{298\,K}} = - 285.9\,kJ\,mo{l^{ - 1}}$
$(II)$ ${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(g);$
$\Delta {H^o_{298\,K}} = - 241.8\,kJ\,mo{l^{ - 1}}$
The molar enthalpy of vapourisation of water will be.....$kJ\,mol^{-1}$