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Question

The absolute enthalpy of neutralisation of the reaction,
MgO(s)+2HCl(aq.)MgCl2(aq.)+H2O(l) will be:

A
57.33kJmol1
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B
greater than 57.33kJmol1
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C
less than 57.33kJmol1
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D
57.33kJmol1
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Solution

The correct option is C less than 57.33kJmol1
The correct answer is less that 57.33Kjmol1.
Because some amount the heat would be required for the ionization of the compound MgO.

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