Question

What happens when.
1.Al is treated with dil.HCl
2.Fe2O3 reacts with Al metal
3.H2S gas reacts with Cl2 gas
4.NaOH reacts with NH4Cl

Answer 1

1)

2Al(s) + 6HCl(aq) -----> 2AlCl3(aq) + 3H2(g).

2)

Fe₂O₃ + 2Al ---------> Al₂O₃ + 2Fe

3)

H2S + Cl2 → S + 2HCl

4)

NaOH (aq) NH4Cl (aq) -> NH3(aq) + NaCl(aq) + H2O

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