Find the molality of H2SO4 solution whose specific gravity is 1.98 g ml^-1 and 95% by volume H2SO4 (A) 7.412
Find the molality of H2SO4 solution whose specific gravity is 1.98 g ml-1 and 95% by volume H2SO4
(A) 7.412
(B) 8.412
(C) 9.412
(D) 10.412
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Correct Option (C) 9.412
Explanation:
H2SO4 is 95% by volume
wt. of H2SO4 = 95g
Vol of solution = 100ml
:. Moles of H2SO4 =95/98,
and weight of solution = 100 x 1.98 g
Weight of water = 198 - 95 = 103 g
Molality = 95 x 1000/98 x 103 = 9.412
Hence molality of H2SO4 solution is 9.412
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