Question

Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH. 

Write down the changes that will be seen in each instance and explain the reason behind it.

(e)  Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH.

Answer 1

Bases react only with oxides of non-metal to form salt and water and neutralization reaction take place.

Magnesium oxide is a base. When Magnesium oxide was added to dilute HCl, it forms magnesium chloride and water, Magnecium chloride is basic in nature it neutralizes acid. MgO_(s)+ 2HCl_(l) = MgCl_2 (aq) + H₂O_(l).

There is no reaction between MgO and NaOH, because NaOH & MgO both are basic in nature.