TS EAMCET · Chemistry · Thermodynamics (C)
In which of the processes, the entropy will decrease
- A \(\mathrm{H}_2(g) \longrightarrow 2 \mathrm{H}(g)\)
- B Liquid water crystallises to ice
- C Temperature of ice is raised from 10 K to 115 K
- D \(2 \mathrm{NaHCO}_3(\mathrm{~s}) \longrightarrow \mathrm{Na}_2 \mathrm{CO}_3(\mathrm{~s})+\mathrm{CO}_2(\mathrm{~g})+\mathrm{H}_2 \mathrm{O}(\mathrm{s})\)
Answer & Solution
Correct Answer
(B) Liquid water crystallises to ice
Step-by-step Solution
Detailed explanation
(a) \(\mathrm{H}_2(g) \longrightarrow 2 \mathrm{H}(g) \Rightarrow \Delta n_g>0 \Rightarrow \Delta S>0\) (b) \(\mathrm{H}_2 \mathrm{O}(l) \longrightarrow \mathrm{H}_2 \mathrm{O}(s) \Rightarrow\) degree of randomness Water Ice of \(\mathrm{H}_2 \mathrm{O}\) molecules decreases,…
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