MCQ
Amongst $BeF _{2}, BF _{3}, H _{2} O , NH _{3}, CCl _{4}$ and $HCl$, the number of molecules with non-zero net dipole moment is ...... .
- ✓$3$
- B$2$
- C$1$
- D$4$
$H _{2} O , NH _{3}$ and $HCl \Rightarrow \mu_{\text {net }} \neq 0$
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(Plank's const. $ h = 6. \times 10^{-34}\, Js\,;$ mass of electron $= 9.1091 \times 10^{-31}\, kg\,;$ charge of electron $e= 1.60210 \times 10^{-19}\, C\,;$ permittivity of vaccum $\in _0 = 8.854185 \times 10^{-12} \,kg^{-1} \,m^{-3} A^2$)
$\Delta {H_{{\rm{System}}}} = 2000\ kJ/mol$
$T = 400\ K$
Find out value of $\Delta {S_{{\rm{System}}}}$..........$ kJ/mol-K$
$2H_2O(g) \rightleftharpoons 2H_2(g) + O_2(g); K_1 = 2.1 \times 10^{-13}$
$2CO_2(g) \rightleftharpoons 2CO(g) + O_2(g); K_2 = 1.4 \times 10^{-12}$