Question

Three moles of sulphuric acid react with two moles of aluminium metal to give one mole of aluminium sulphate and three moles of hydrogen gas. Write the balanced chemical equation corresponding to this reaction

Answer 1

a) Dilute sulphuric acid reacts with zinc granules to produce zinc sulphate and hydrogen gas

H

2

SO

4

(aq)+Zn(s)→ZnSO

4

(aq)+H

2

(g)

(b) Dilute hydrochloric acid reacts with magnesium ribbon to produce magnesium chloride and hydrogen gas.

2HCl(aq)+Mg(s)→MgCl

2

(aq)+H

2

(g)

(c) Dilute sulphuric acid reacts with aluminium powder to produce aluminium sulphate and hydrogen gas.

3H

2

SO

4

(aq)+2Al(s)→Al

2

(SO

4

)

3

(aq)+3H

2

(g)

(d) Dilute hydrochloric acid reacts with iron filings to produce ferric chloride and hydrogen gas.

6HCl(aq)+Fe(s)→2FeCl

3

(aq)+3H

2

(g)

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Answer 2

3H2So4 + 2Al gives rise to Al2(SO4)3+3H2