Hot conc. H2SO4acts as moderately strong oxidising agent. It oxidises bothmetals and nonmetals. Which of the following element is oxidised by conc.H2SO4into two gaseous products?a)Cub)Sc)Cd)znCorrect answer is 'C'. Can you explain this answer?

Question

Accepted Answer

C element is oxidised by conc. H2SO4 into two gaseous products

Answer

Oxidation by Concentrated H2SO4:

Concentrated H2SO4 is a moderately strong oxidizing agent. It can oxidize both metals and nonmetals. When it acts as an oxidizing agent, it itself gets reduced to SO2(g) or SO3(g).

Oxidation of Carbon:

When concentrated H2SO4 oxidizes carbon, it produces CO2(g) and SO2(g).

C(s) + 2H2SO4(l) → CO2(g) + 2SO2(g) + 2H2O(l)

Oxidation of Copper:

Concentrated H2SO4 can oxidize copper to form CuSO4.

2Cu(s) + 2H2SO4(l) + O2(g) → 2CuSO4(aq) + 2H2O(l)

Oxidation of Zinc:

Concentrated H2SO4 can oxidize zinc to form ZnSO4.

Zn(s) + H2SO4(l) → ZnSO4(aq) + H2(g)

Oxidation of Sulfur:

Concentrated H2SO4 can oxidize sulfur to form SO2.

S(s) + 2H2SO4(l) → 3SO2(g) + 2H2O(l)

Answer:

Out of the given options, only carbon can be oxidized by concentrated H2SO4 to form two gaseous products, CO2 and SO2. Hence, option C (C) is the correct answer.

Answer

C + 2 H2SO4→→→→ CO2 + 2 SO2 + 2 H2O

Here two gaseous products are formed i.e. CO2 & SO2

Answer

C +H2SO4 gives CO2 +SO4 +H20

Answer

Correct answer is option 'C'

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