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Predict the correct sign of $∆ S$ for following reaction by choosing the option
I. $C (s) + H_{2} O (l) \to CO (g) + H_{2} (g)$
II. $N_{2} (g, 10 atm) \to N_{2} (g .1 atm)$
III. Hard boiling of an egg
IV. Desalination of water
Choose the correct option.

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I- $-$ ,II- +,III- $-$ ,IV- $-$

I- $-$ ,II- +,III- +,IV- +

I- +,II- +,III- +,IV- $-$

I- +,II- $-$ ,III- $-$ ,IV- +

answer is A.

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Detailed Solution

I . $C (s) + H_{2} O (l) \to CO (g) + H_{2} (g)$

$Δ n = n_{products} - n_{reac tants}$

$Δ n = 2 - 1 = 1$

Here, number of moles of product increases
II. Volume increases
III. De - naturation increases

IV. No. of particles decreases

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