MCQ
Which of the following processes takes place with decrease of entropy?
- ASolid $\to $ gas
- Bsugar $+$ water $\to $ solution
- ✓$NH_{3(g)} + HCl_{(g)} \to NH_4Cl_{(s)}$
- D$A_{(g)} + B_{(g)} \to $ mixture
✓
Answer
Correct option: C.
$NH_{3(g)} + HCl_{(g)} \to NH_4Cl_{(s)}$
c
The structure of a solid is usually well ordered, the structure of a liquid is less ordered, and that of a gas is quite random. Entropy of mixing is higher than the individual separate reactants. In option $(C)$ two gases changing to the one solid product. The product side is more organised and thus has less entropy.
The structure of a solid is usually well ordered, the structure of a liquid is less ordered, and that of a gas is quite random. Entropy of mixing is higher than the individual separate reactants. In option $(C)$ two gases changing to the one solid product. The product side is more organised and thus has less entropy.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which of these is least likely to act as a Lewis base?
Incorrect statement
For the reaction taking place in the cell:
→$Pt ( s )\left| H _{2}( g )\right| H ^{+}( aq ) \| Ag ^{+}( aq ) \mid Ag ( s )$
$E _{\text {Cell }}^{0}=+0.5332 V$.
The value of $\Delta_{ f } G ^{0}$ is $kJ \,mol ^{-1} \cdot$ (in nearest integer)
The essential condition for the feasibility of a reaction is that
Which of the following species have $s p^2$ hybridisation on central atom?
→Which of the following reaction has positive entropy change ?
In which layer, most of the atmospheric air is present?
Which one of the following substance behave as oxidizing and reducing agent both?
Which of them are Non $-$ biodegradable waste?
→Which of the following is an isomer of compound $1$ ?
→$\underset{(1)}{\mathop{C{{H}_{3}}C{{H}_{2}}CHO}}\,$
$\underset{(2)}{\mathop{\begin{matrix}
O \\
|| \\
C{{H}_{3}}-C-C{{H}_{3}} \\
\end{matrix}}}\,$
$\underset{(3)}{\mathop{C{{H}_{3}}-CH=CH-OH}}\,$