NEET 2024 — Chemistry solution

NEET2024Chemistry

In which of the following processes entropy increases?

A. A liquid evaporates to vapour.

B. Temperature of a crystalline solid lowered from 130 K to 0 K.

C. 2 NaHCO $_{3}$ (s) $\to$ Na $_{2}$ CO $_{3}$ (s) + CO $_{2}$ (g) + H $_{2}$ O(g)

D. Cl $_{2}$ (g) $\to$ 2Cl(g)

Choose the correct answer from the options given below:

Solution

A: liquid $\to$ gas, disorder increases.

B: cooling decreases entropy.

C: gases form from solid; disorder increases.

D: 1 mole of gas $\to$ 2 moles of gas (atoms), disorder increases.

$∴$ A, C, and D.

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