Molar volume at STP is 22.4 L/mol. In acidic solution Cr2O7^2- + 3SO2 + 2H+ -> 2Cr^3+ + 3SO4^2- + H2O. For the complete reaction of 0.02 mol of K2Cr2O7, select the correct statement(s).

1.344 L of SO2 (STP) is consumed

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3rx161

Molar volume at STP is $22.4 L/mol$ . In acidic solution $Cr X_{2} O X_{7} X^{2 -} + 3 SO X_{2} + 2 H X^{+} 2 Cr X^{3 +} + 3 SO X_{4} X^{2 -} + H X_{2} O$ . For the complete reaction of $0.02$ mol of $K X_{2} Cr X_{2} O X_{7}$ , select the correct statement(s).

SO X_{2} = 3 \times 0.02 = 0.06

mol

= 1.344 L

(A true; B wrongly uses equivalents, 0.12).

Cr X^{3 +} = 2 \times 0.02 = 0.04

mol, so C is false.

SO X_{4} X^{2 -} = 0.06

mol (D true).