Question

Ksp CaS04 at 298 K is 6.4 x 10-6 M2. If 9 * 10-mol of Caso, is added to 1 L of water at 298 K
amount of Caso, remaining undissolved is
1) Nil
2) 2.6 x 10-mol
3) 8 * 10- mol 4) 1 * 10-m beol​

Answer 1

Answer:

Total pressure is 5 atm. The mole fraction of nitrogen is 0.8.

Hence,the partial pressure of nitrogen=P

T

×X=0.8×5=4 atm

According to Henry's law, P=KX

x is the mole fraction

K is the henry's law constant

P is the pressure in atm.

Substitute values in the above expression.

X=

1×10

5

atm

4 atm

=4×10

−5

=

10

n

n=4.0×10

−4

mol