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27 April, 08:20

Write a balanced formation equation at standard conditions for the compound HCN.

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  1. 27 April, 11:21
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    The formation of hydrogen cyanide, HCN is formed by reacting hydrogen gas, carbon and nitrogen gas, expressed in the following expression below:

    ½ H2 (g) + C (s) + ½ N2 (g) → HCN (g) ΔHof = 135 kJ

    At standard conditions, hydrogen and nitrogen exist as gases while carbon is solid. This is also an endothermic reaction due to the positive ΔHof
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