The Student Room Group

A level mcp

eaction 1 4NH3(g) + 5O2(g) 4NO(g) + 6H2O(g) ∆H = –909 kJ mol–1
Reaction 2 2NO(g) + O2(g) 2NO2(g) ∆H = –115 kJ mol–1
Reaction 3 3NO2(g) + H2O(l) 2HNO3(aq) + NO(g) ∆H = –117 kJ mol–1
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Just quoting in Puddles the Monkey so she can move the thread if needed :h:

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