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ChemistryThermochemistryHess's Law of Constant Heat SummationMedium2 minQB

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Given that

Heat of formation of acetylene is :-

Options:

Answer:

D

Solution:

Aim : $2 C + H_{2} (g) \to C_{2} H_{2} (g)$ .

Eq. (ii) + Eq. (iii) → Eq. (iv) - Eq. (i)

Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Hess's Law of Constant Heat Summation

⏱ 2mℹ️ Source: QB

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