Answer to Question #283879 in General Chemistry for NAT

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^-

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