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Concn. Sulphuric acid has density of …

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Concn. Sulphuric acid has density of 1.95g/cm3 & is 98% by weight. Calculatr the molarity and molality of the solution.

Posted by Nitish Kr. 6 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Yuvraj Patel 6 years, 9 months ago

Given Density=1.95g/cm3 Weight of H2SO4 =98%=98g Weight of solution =100g Hence, volume of solution =100/1.95 =51.2cm3 Weight of solvent =100-98=2g Molar mass of H2SO4 98g Hence, no. of moles of H2SO4 =Given mass/Molar mass=98/98=1mol Molality =no.of moles *1000/mass of solvent =1*1000/2=500Mol Molarity =no. of moles*1000/volume of solution =1*1000/51.2=19.5Mol

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