What are the possible products of the reduction of sulfuric acid? Select all that apply.

SO2(g)

HS3(aq)

H2S(g)

SO3(g)

SO2(g) and H2S(g)

Explanation:

Sulphuric acid (H2SO4) is very important in industries and is often referred to as the best chemical due to its multiple uses. It is corrosive and used in making fertilizers and explosives. It can also be used to make paints, detergents etc.

Sulphuric acid reacts with Sodium iodide to give Hydrogen iodide and Sodium hydrogen Sulphate.

NaI (s) + H2SO4 (l) =HI (g) + NaHSO4 (s)

The Hydrogen iodide then reacts with the Sulphuric acid to give Iodine,Hydrogen sulphide and water

HI (g) + H2SO4 (l) = 4I2(s) + H2S (g) + 4 H2O (l)

The sulphuric acid can also undergo reduction reaction with hydrogen iodide to give Iodine, Sulphur dioxide and Water.

2 HI (g) + H2SO4 (l) = I2(s) + SO2 (g) + H2O (l)

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