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Q. No.The absolute enthalpy of neutralisation of the reaction: MgO(s) +2HCl(aq) → MgCl2(aq)+H2O(l) will be:
1. 57.33 kJ mol–1
2. –57.33 kJ mol–1
3. Greater than –57.33 kJ mol–1
4. Less than –57.33 kJ mol–1
AIPMT - 2005
Subtopic: Hess's Law |
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