Q.

4 g of sulphur is burnt to form SO2, which is oxidised by Cl2 water. The solution is then treated with BaCl2 solution.
The amount of BaSO4 precipitated is:

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a

0.125 mol

b

1 mol

c

0.24 mol

d

0.5 mol

answer is D.

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Detailed Solution

Moles of S = 432=18=0.125 mol

S+O2 SO2

SO2+Cl2 2Cl+SO42-

SO42-+BaCl2BaSO4+2Cl 

Moles of S = Moles of SO2 = Moles of SO42-

= Moles of BaSO4 = 0.125 mol

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