# Science +2

Concentrated sulphuric acid has a density of 1.9 g/ml and is 99% H2SO4 by weight. calculate the molarity of H2SO4 in this acid.

asked by Kvs
1. 188.1

posted by Anonymous
2. 18.81 M

posted by aubrey
3. Molar mass of sulfuric acid=98g/mole

Mass of sulfuric acid in 100 g of solution = 99g

Mass of water in 100 g of solution =1g = 0.001 kg

Number of moles of sulfuric acid in 100 g of solution = 99/98 =1.01 moles

Molality = number of moles of solute/ mass of solvent in kg

= 1.01/0.001

=1010 m

posted by Anonymus

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