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Battery acid (H2SO4) contains 13% by mass H2SO4. What is the molality of the solution? |
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Answer» tion:The molarity of the solution is 4.22M. THEREFORE 4.22 mol of H 2 SO 4 is present in 1000cm 3 of solution.Now M(molar mass of H 2 SO 4 )=98g(mol) −1 W(mass of H 2 SO 4 )=4.22×98=413.56gmass of the solution=density×volume=1.21×1000=1210gmass of water(solvent)=1210g−413.56g=796.44g=0.79644kgm(molality)= mass of solvent(in kg)N solute m= 0.79644kg4.22mol =5.298mol(kg) −1 |
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