Question

concentrated aqueous sulphuric acid is 98% H2SO4 (sulphuric acid ) by mass and has a density of 1.80gL-1 (gL raise to the power -1) . Volume of acid required to make one litre of 0.1 M H2SO4 is???

Answer 1

 98% by weight means 98 gm H2SO4 in 100 gm solution or 98 g H2SO4 in 2 g water.

Number of moles of H2SO4 = 98/98

   = 1

Density = 1.8 g/L

Volume of solution = Mass of solution/ Density

  = 100/1.8

   = 55.55 ml

  = 0.055 L

   



Applying,

M1V1 = M2V2

18.18 x V1 = 0.1 x1

V1 = 0.0055 L = 5.5 ml

 

Hence , volume of acid required = 5.5 ml

Answer 2

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