When a strong acid, strong base or their salt are dissolved in wa… - Vidyadip

MCQ

When a strong acid, strong base or their salt are dissolved in water, they are completely ionised. If a strong acid is added to a strong base, ${H^ + }$ ions from the former combine with $O{H^ - }$ ions of the latter forming water. The formation of each water molecule liberates a certain quantity of energy and the reaction is exothermic. The heat liberated when one mole of water is formed by combining hydrochloric acid and sodium hydroxide is $ 13.7 \,kcal$. The heat liberated when one mole of water is formed by combining sulphuric acid and sodium hydroxide is......$kcal$

A
$25.5$
B
$8.5$
✓
$13.7$
D
$34$

✓

Answer

Correct option: C.

$13.7$

(c)${H^ + } + O{H^ - } \to {H_2}O,\,\,\Delta {H_{{\rm{neutralization}}}} = 13.7\,kcal$.

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