Mole ConceptHard

Question

SO2 gas is slowly passed through an aqueous suspension containing 12 g of CaSO3 till the milkiness just disappears. What amount of SO2 would be required?

Options

A.6.4 mole
B.0.3 mole
C.0.1 mole
D.0.2 mole

Solution

CaSO3 + SO2 + H2O → Ca(HSO3)2

120 g 1 mole

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