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  • The absolute enthalpy of neutralization of the reaction: <img alt="MgO_{\left ( s \right )}+2HCl_{\left ( aq \right )}\rightarrow MgCl_{2\left ( aq\right )}+ H_{2}O\left ( l \right ) will

The absolute enthalpy of neutralization of the reaction:

MgO_{\left ( s \right )}+2HCl_{\left ( aq \right )}\rightarrow MgCl_{2\left ( aq\right )}+ H_{2}O\left ( l \right ) will\, \, be:

Option: 1

-57.33 kJ mol^{-1}


Option: 2

Greater than -57.33 kJ mol^{-1}


Option: 3

Less than -57.33 kJ mol^{-1}


Option: 4

57.33 kJ mol^{-1}


Answers (1)

best_answer

Heat of neutralisation of strong acid and strong base = - 57.33KJ.

Mgo is weak base while Hcl is strong acid, So heat of neutralisation of Mgo and Hcl is lower to - 57.33 KJ because Mgo requires some heat in ionisation. 

Option (3) is correct answer

Posted by

Sanket Gandhi

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