Hydrogen cyanide is a highly poisonous, volatile liquid. It can be prepared by the reaction: (1) CH4 (g) + NH3 (g) → HCN (g) + 3 H2 (g) What is the heat of this reaction (DH for reaction (1))? Use Hess’s Law and the following thermochemical equations to determine the answer. N2 (g) + 3H2 (g) → 2NH3 (g) ; DH =

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A: Dear student , since you have posted multiple questions we will allow to solve only first question…

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