Q.

The amount of BaSO4  formed upon mixing 100 ml of 20.8% by weight  BaCl2  solution with 50ml of 9.8% by weight H2SO4  solution will be ____?
(Ba =137, Cl = 35.5., S= 32, H = I and O=16)
 

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a

23.3g

b

30.6g

c

11.65 g

d

33.2g

answer is B.

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Detailed Solution

BaCl2+H2SO4BaSO4+2HCl 

Weight of BaCl2=20.8g;weight of H2SO4=9.8%= 4.9gm ,

 BaCl2+H2SO4BaSO4+2HCl

    0.1          0.05                0.05

Weight of BaSO4=0.05×233=11.65g

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