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MolSynapse / Question bank / p-Block Elements: Groups 15 and 16 / Sulphur allotropes, SO2, sulphuric acid, oxyacids of sulphur

JEE Advanced levelSingle correct optionDifficulty 3 of 3pn084

Excess hot concentrated sulphuric acid reacts completely with 0.50 mol of carbon according to $C + 2 H X_{2} SO X_{4} CO X_{2} + 2 SO X_{2} + 2 H X_{2} O$ . The water is condensed. The total volume of gases collected at STP (molar volume 22.4 L/mol) is

A22.4 L
B33.6 L
C67.2 L
D44.8 L

Answer: B

0.50 mol of C gives 0.50 mol

CO X_{2}

and 1.00 mol

SO X_{2}

, i.e. 1.50 mol of gas. Volume =

1.50 \times 22.4 = 33.6

L.

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