Question

complete the following reaction MgO(s)+ ..... = MgCl2(aq) +H2O(l)​

Answer 1

Explanation:

This equation can be obtained by combining equations :

(1) MgO(s) + 2 HCl(aq)

  MgCl2(aq) + H2O(l)

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Answer 2

Here the complete formula will be:-

MgO(s)+2HCl(aq)→MgCl2(aq)+H2O(l)

we know that MgO(s) is a weak base

 HCl(aq) is a strong acid.

But, MgO(s) being a weak base, requires some heat in neutralization and thus consumes a part of the heat. This results in a decrease in the net amount of heat that is released. In other words, the absolute enthalpy of neutralization of this reaction, that is, reaction between a weak base and a strong acid will be lower than that of the enthalpy of neutralization of a strong acid and a strong base.