Question

this is for chem 30

Determine whether each of the following will undergo dissociation, dissolving or ionization. Then write the solvation equation for each substance:

a) Lithium oxide

b) Magnesium nitride

c) Hydrobromic acid

Answer 1

a) Lithium oxide dissolves in water to form Lithium hydroxide solution.

Lithium hydroxide dissociates to

$Li^+\>and\>OH^-$

$Li_2O_{(s)}+H_2O{(l)}\rightarrow2LiOH_{(aq)}$

b)

Magnesium Nitride dissolves in water and react with water to produce Magnesium Hydroxide and Ammonia Gas

$Mg_3N_{2(s)}+6H_2O_{(l)}\to3Mg(OH)_{2(s)}+2NH_{3(g)}$

c)

Hydrobromic Acid is a strong acid and it completely dissociate in water to form H⁺ and Br^-

$HBr_{(l)}+H_2O_{(l)}\to\>H^+_{(aq)}+Br^-_{(aq)}$