Question

How many kilogram of oxygen gas can dissolve in 1 dm3 of water at 20C if it's partial pressure is 0.20 atm Kh for O2 at 20 C is 4.58×10^4 ?​

Answer 1

Answer:

9.4 kilogram will be the right answer

Answer 2

We have,

V=1dm^3

P=0.20atm

T=20°c=293K

Kh= 4.58*10^4atm

As we know,

P=kh*x

So,

0.2=4.58*10^4*xo2/xo2+x(water)

0.2=4.58*10^4*w/32/w+1776/32

0.2(w+1776)=4.58*10^4w

0.2*1776=w(4.58*10^4-0.2)

355.2=45799.8w

w=355.2/45799.8=0.007755g=0.000007755kg