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Q.

A sample of H2SO4 is labelled as 9.8 % by weight. Its specific gravity is 1.8 g/cc. Volume of this solution required to prepare 180 ml of 0.2 molar H2SO4 solution is

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a

20 ml

b

40 ml

c

10 ml

d

50 ml

answer is A.

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Detailed Solution

Molality of H2SO4
⇒M1=%× sp gravity ×10 M.wt.of H2SO4=9.8×1.8×1098=1.8MM1V1=M2V2⇒1.8×V1=0.2×180⇒V1=20ml

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