Question

Write the chemical equations for these word reactions?

Solid Aluminium metal reacts with liquid water to produce aluminium hydroxide and hydrogen gas.

Solid aluminium oxide reacts with an aqueous solution of sodium hydroxide to form aqueous sodium aluminate and liquid water.

Answer 1

1. 2Al(s) + 6H20(l) --> 2Al(OH)3(aq) + 3H2(g), and;
2. Al2O3(s) + NaOH(aq) --> NaAl2O3(aq) + H20(l)

Explanation:

2Al(s) + 6H20(l) --> 2Al(OH)3(aq) + 3H2(g)
Solid Aluminium metal reacts with liquid water to produce aluminium hydroxide and hydrogen gas.

Al2O3(s) + NaOH(aq) --> NaAl2O3(aq) + H20(l)
Solid aluminium oxide reacts with an aqueous solution of sodium hydroxide to form aqueous sodium aluminate and liquid water.