Anybody explain me questions 6................................
pushkar , 5 Years ago
Grade
Physical Chemistry> Anybody explain me questions 6..............
1 Answers
Arun
Last Activity: 5 Years ago
Given ,
Weight of H2SO4 = 98 g .
Density = 1.98 g/cm3 .
Weight of H2SO4 = 98 g .
Density = 1.98 g/cm3 .
we know , Weight of solution = 100 gm .
Solvent = water .
Solvent = water .
Acc . to question ...
.•. Volume of Solution = 100 ÷ 1.98 = 50.5 cm3.
Weight of water = 100 - 98 = 2 g .
Molecular weight of H2SO4 = 98 g/mol .
No• of moles in 98 gm = Given mass / molar mass .
= m/M = 98/98 = 1 mol .
= m/M = 98/98 = 1 mol .
Formula of Molality ,
=
500 mol/kg .
Formula of Molarity ,
=
19.8 mol .
Hence ,
Molality =500 mol/kg .
Molarity = 19.8 mol/ l .
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