WAEC - Chemistry (1990 - No. 13)

The gas that is liberated when iron is heated with concentrated tetraoxosulphate (VI)acid is

H₂S

\(SO_{2}\)

HCI

SO₃

O₂

Giải thích

2Fe (s) + 6H2SO4 (l) → Fe2(SO4)3 (aq) + 3SO2 (g) + 6H2O (l)

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