SO(2) gas is slowly passed through an aq...

`SO_(2)` gas is slowly passed through an aquesous suspension containing 12g `CaSO_(3)` till the milkiness just disappears, what amount of `SO_(2)` would be required?

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The correct Answer is:

d,d

The reaction involed is
`underset("64g")underset("1mol")(underset("120g")underset("1mol")underset("milky")(CaSO_(3))+H_(2)O+SO_(2) to underset("colourless")(Ca(HSO_(3))_(2)))`
`12"g "CaSO_(3) "will react with" 6.4g"SO_(2) or 0.1"mol" SO_(2)`

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