Calculate the molarity and molality of9.8 (w/w) solution of sulphuric acid.give the density of solution is 1.02g/ml
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Answer: M (Molarity )= 0.980 M
m (molality ) = 1.10 m
Explanation: w/w=9.8%, w (solute)= 9.8g W(solvent) = 90.2 g w(solution)=100 g
M = w/M.M. = 9.8/ 98
------------- ×1000 ------------ ×1000 = 0.980 M
V ( mL) 100×1.02
m = w/M.M 9.8 /98
----------- × 1000 = --------------- ×1000 = 1.10 m
W (g) ( 100 - 9.8)
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