MCQ
Enthalpy change for reaction, $\frac{1}{2}{H_2} + \frac{1}{2}C{l_2} \to HCl$, is called
- AEnthalpy of combination
- BEnthalpy of reaction
- ✓Enthalpy of formation
- DEnthalpy of fusion
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| LIST $I$ (Technique) | LIST $II$ (Application) |
| $A$. Distillation | $I$. Separation of glycerol from spent-lye |
| $B$. Fractional distillation | $II$Aniline - Water mixture |
| $C$. Steam distillation | $III$Separation of crude oil fractions |
| $D$. Distillation under reduced pressure | $IV$.ChloroformAniline |
Choose the correct answer from the options given below:
${I^ - } + \,ClO_3^- + \,{H_2}S{O_4}\, \to \,C{l^ - }\, + \,HSO_4^ - \, + \,{I_2}$
(no free $H^+$ is present). Select the correct statement in the balanced equation (Coefficients in smallest whole number ratio.)
$(i)\,\,C\,({\rm{graphite}})\, + \,{O_2}{\kern 1pt} (g)\, \to \,C{O_2}\,(g);\,\Delta r{H^\circleddash} = x\,\,kJ\,mo{l^{ - 1}}$
$(ii)\,\,C\,({\rm{graphite}})\, + \,\frac{1}{2}{O_2}{\kern 1pt} (g)\, \to \,CO\,(g);\,\Delta r{H^\circleddash} = y\,\,kJ\,mo{l^{ - 1}}$
$(iii)\,\,CO\,(g)\, + \,\frac{1}{2}{O_2}{\kern 1pt} (g)\, \to \,C{O_2}\,(g);\,\Delta r{H^\circleddash} = z\,\,kJ\,mo{l^{ - 1}}$
Based on the above thermochemical equations, find out which one of the following algebraic relationships is correct?
$\begin{array}{*{20}{c}}
{C{H_3} - C{H_2} - CH - C{H_3}}\\
{\,\,\,\,\,\,\,\,\,|}\\
{\,\,\,\,\,\,\,\,\,\,F\,}
\end{array}$ $\xrightarrow[\Delta ]{{alc.\,KOH}}$ $X$ (Major)