Question

1 mole of PbS is oxidised by “X” moles of O₃>to get “Y” moles of O2. X + Y = __________

Answer 1

Correct Answer: 8

The balanced chemical equation for the oxidation of PbS by ozone is:

\(\text{PbS} + 4\text{O}_3 \rightarrow \text{PbSO}_4 + 4\text{O}_2\)

From the equation:
- 1 mole of PbS reacts with 4 moles of \( \text{O}_3 \), so \( X = 4 \).
- 4 moles of \( \text{O}_2 \) are produced, so \( Y = 4 \).

Therefore:

\(X + Y = 4 + 4 = 8\)

The Correct answer is: 8