Change in enthalpy for reaction \( 2 \mathrm{H}_{2} \mathrm{O}_{2}(l) \longrightarrow 2 \mathrm{....

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Change in enthalpy for reaction
\( \mathrm{P} \)
\( 2 \mathrm{H}_{2} \mathrm{O}_{2}(l) \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{O}_{2}(\mathrm{~g}) \)
W.
if heat of formations of \( \mathrm{H}_{2} \mathrm{O}_{2}(l) \) and \( \mathrm{H}_{2} \mathrm{O}(l) \) are -188 and \( -286 \mathrm{~kJ} / \mathrm{mol} \) respectively is:
(1) \( -196 \mathrm{~kJ} / \mathrm{mol} \)
(2) \( +196 \mathrm{~kJ} / \mathrm{mol} \)
(3) \( +948 \mathrm{~kJ} / \mathrm{mol} \)
(4) \( -948 \mathrm{~kJ} / \mathrm{mol} \)


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