Question

if o2 is bubbled through water at 393k, how many milimoles of o2 gas would be resolved in one litreof water? assume that o2 exerts of pressure 0.95 bar?

Answer 1

Question:

if o2 is bubbled through water at 393k, how many milimoles of o2 gas would be resolved in one litreof water? assume that o2 exerts of pressure 0.95 bar?

T=393K
n(O2)-?
V=1 l = 0.001 m3
P = 0.95 bar

Solution:

PV = nRT , n=PV/RT
R = 8.31 J/mol*K
1 bar = 100 kPa, 0.95 bar = 95 kPa = 95000 Pa
Then, n = (95000*0.001)/(8.31*393) = 0.029 mol = 29 millimoles
Answer: 29 millimoles of O2