MCQ
Isomers of propionic acid are
- ✓$HCOO{C_2}{H_5}$ and $C{H_3}COOC{H_3}$
- B$HCOO{C_2}{H_5}$ and ${C_3}{H_7}COOC{H_3}$
- C$C{H_3}COOC{H_3}$ and ${C_3}{H_7}OH$
- D${C_3}{H_7}OH$and $C{H_3}COC{H_3}$
$(A) \,HCOOC _2 H _2$ meet formula $= c _3 H _6 O _2$
$CH _3COOCH_3$ Meet formula $= C _3 H _6 O _2$
Hence, option $A$ is correct.
$(B) \,H - COOC _2 H _5$ and $C _3 H _7COOH$
$HCOOC_2 H _5$ Meet formula $= C _3 H _6 O _2$
$C _3 H _4 COOH$ meet formula $= C _4 H _8 O _2$
Hence, option $B$ is incorrect.
Similarly, options $C$ and $D$ are incorrect.
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$(I)$ ${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(l);$
$\Delta {H^o_{298\,K}} = - 285.9\,kJ\,mo{l^{ - 1}}$
$(II)$ ${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(g);$
$\Delta {H^o_{298\,K}} = - 241.8\,kJ\,mo{l^{ - 1}}$
The molar enthalpy of vapourisation of water will be.....$kJ\,mol^{-1}$
$(I)\,\, AgNO_3$
$(II)\,\, CaCO_3$
$(III) \,\,Pb(NO_3)_2$
$(IV) \,\,Na_2CO_3$
Compare rate of $E_2$ reaction