Question

why is the solubility of copper sulphate minimum at 25°C maximum at 100°C.​

Answer 1

꧁༆Answer༆꧂

100 g of dilute solution of CuSO4 contain

=1.2×10=12.0gCuSO4

Mass of water present in dilute solution

=(100−12)=88g

To saturate 100 g of water, CuSO4 required = 25 g

So, to saturate 88 g of water, CuSO4 required =10025×88=22g

Thus, the mass of CuSO4 to be added to 100 g of dilute solution to saturate it =(22−12)=10g.

Answer 2

Answer:

100 g of dilute solution of CuSO

4

contain

=1.2×10=12.0gCuSO

4

Mass of water present in dilute solution

=(100−12)=88g

To saturate 100 g of water, CuSO

4

required = 25 g

So, to saturate 88 g of water, CuSO

4

required =

100

25

×88=22g

Thus, the mass of CuSO

4

to be added to 100 g of dilute solution to saturate it =(22−12)=10g.