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Chemistry-

General

Easy

Question

Identify the reaction in which the heat liberated corresponds to the heat of formation ( $increment$ H) :

$C (diamond) + O_{2} (g) \to {C O}_{2} (g) + heat$
$2 H_{2} (g) + O_{2} (g) \to 2 H_{2} O (g) + heat$
$C (diamond) + 2 H_{2} (g) \to {C H}_{4} (g) + heat$
$S (rhombic) + O_{2} (g) \to {S O}_{2} (g) + heat$

The correct answer is: $S left parenthesis text rhombic end text right parenthesis plus O subscript 2 end subscript left parenthesis g right parenthesis rightwards arrow S O subscript 2 end subscript left parenthesis g right parenthesis plus text heat end text$

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