MCQ
The $IUPAC$ name of neopentane is
- ✓$2, 2$ dimethylpropane
- B$2-$ methyl propane
- C$2, 2$ dimethylbutane
- D$2-$methylbutane

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$\frac{1}{2}\,{P_4}(s)\,\, + \,\,3C{l_2}(g)\, \to \,2PC{l_3}(\ell )\,\,\,\,\,\Delta H\, = \, - \,635\,\,kJ$
$PCl_3 (\ell )\,+\,Cl_2(g)\,\to \,PCl_5(s) \,\,\,\,\Delta H\, =\, -\,137\,kJ$.....$kJ$
$\frac{1}{2}{X_2} + \frac{3}{2}{Y_2} \to X{Y_3},\,\Delta H = - 30\,kJ$ , to be at equilibrium, the temperature will be ............... $\mathrm{K}$