CSEC Chemistry · May/June 2013 · Paper 1 · Question Q34
Item 34 refers to the Haber process for the production of ammonia, according to the equation
\text{N}_2(\text{g}) + 3\text{H}_2(\text{g}) \rightarrow 2\text{NH}_3(\text{g}), \quad \Delta H = -92\text{ kJ mol}^{-1}
The notation \Delta H = -92\text{ kJ mol}^{-1} means that 92\text{ kJ} of energy are
- (A)released during the reaction
- (B)required to form the bonds in
\text{NH}_3 - (C)required for the reaction to proceed
- (D)required to break the bonds in
\text{N}_2and\text{H}_2
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