Question

A solution contains 20% solute by weight at 60° C. When cooled to 30° C, the soluti
contains 10% solute by weight. When 45 g solution is cooled from 60° C to 30°C,
(D) the
ergy
4.
mass of solute deposited is :​

Answer 1

ANSWER:

Solution contain 20% of solute by weight at 60oC

Solution contain 10% of solute by weight at 30oC

When the 45g solution is cooled from 60oC to 30oC

the mass of solute deposited are 

=45g×10020(at60oC)

=4.5×2

=9g

=45g×10010(at30oC)

=4.5×1

=4.5g

∴ At 60oC mass of solute is 9g

And at 30oC mass of solute is 4.5g.