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Amongst the chemical reaction given belo...

Amongst the chemical reaction given below, the reaction with increasing entropy are
`H_(2)O(l)rarr H_(2)O(g)`
`C(s)+CO_(2)(g)rarr2CO(g)`
`2H_(2)(g)+O_(2)(g)rarr2H_(2)O(l)`
`N_(2)(g)+O_(2)(g)rarr " Mixture of "N_(2)and O_(2)`

A

(i), (ii), (iii), (iv)

B

(i), (ii), (iii)

C

(i), (ii), (iv)

D

(ii), (iii), (iv)

Text Solution

Verified by Experts

The correct Answer is:
C
(i) `H_(2)O(l) hArr H_(2)O(g)` system is changed so, entropy is maximum.
(ii) `C(s) + CO_(2)(g)rarr 2 CO(g)` in this system product has more number of gaseous moles. Thus entropy increases. (iii) `2H_(2)(g)+ O_(2)(g)rarr2H_(2)O(l)` gaseous system is converted into liquid system. So, entripy decreases.
(iv) `N_(2)` (g) + `O_(2) (g) rarr` mixture of `N_(2) and O_(2)` mixture of `N_(2) and O_(2.)` on mixing total gaseous volume inceases in comparison to their individual volume hence entropy increases.
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