Question

Solve the question in the attachment, need proper explanation. In last it is written that density of solution = 1.5g/cc.

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Answer 1

Basic question of concentration

Let the mass of the solution be x

then mass of H2SO4 in it=19.6x/100 =9.8x/50

=4.9x/25

moles of H2SO4=4.9x×1000/25 ×1/98 =x×1000/500 moles=2xmoles

Volume of solution=mass/density=x/1.5

molarity=2x×1.5/x =3

moles of solute=2xmoles

mass of solvent=x-4.9x/25 =20x/25 (approx)

molality (m)=2x×25/20x=2.5

Note:-1kg/L or 1g/cc is same

Answer 2

Answer:

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