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Anybody explain me questions 6................................

Anybody explain me questions 6................................

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Arun
25750 Points
4 years ago
Given , 
Weight of H2SO4 = 98 g .
Density = 1.98 g/cm3 .
we know , Weight of solution = 100 gm .
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 .
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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