The density of 15% Sulphuric Acid solution is 1.1g/cm3. What Volume of 95% sulphuric acid density = 1.85g/cm3 and what mass of water must be taken to prepare 1 litre 15% of sulphuric acid solution?

Asked by mesamit | 31st Jul, 2010, 04:00: PM

Expert Answer:

Molecular mass of sulphuric acid= 1 X2 +32 +16 X4 = 98
Molarity= Density X strength X10/molar mass
Molarity of first solution = 1.1 X 15 X10/98
Molarity 1= 1.68 M
Molarity of second solution = 1.85 X 95 X10/98 

Molarity 2= 17.93 M

 
using
 

M1 X V 1 = M 2 X V 2

 
17.93 X V = 1.68 X 1000
 

V= 93.7cm

 
 
Now mass of 1000 cm of 15 %   sulphuric acid= 1000X 1.10 = 1100 gm
Mass of 93.7  cm 3of 95 % sulphuric acid = 93.7 X 1.85 = 173.34
So mass of water =  1100 - 173.4= 926.6 gm
 

Answered by  | 1st Aug, 2010, 09:30: AM

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