Question

How many millimoles of H2

S is dissolved when it is passed through 1 litre of water at 300 K

temperature ? (value of KH

= 5.6 ´ 104

bar and partial pressure is 3 ´ 108 bar)

(A) 2.9758 (B) 5.357 (C) 3.9758 (D) 29.758​

Answer 1

Answer:

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=76480 bar0.987 bar=1.29×10−5=55.55n

n=7.16×10−4=1mol7.16×10−4 mol×1000 mmol=0.716 mmol

So, the correct option is C