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CO(g) is dissolved in H(2)O at 30^@C and...

`CO(g)` is dissolved in `H_(2)O` at `30^@`C and `0.020` atm. Henry's law constant for this system is `6.20xx10^(4)` atm. Thus mole fraction `CO(g)` is

A

`1.72xx10^(-7)`

B

`3.22xx10^(-7)`

C

`0.99`

D

`0.01`

Text Solution

Verified by Experts

The correct Answer is:
B
The mole fraction of a gas in solution is related to partial pressure of the gas above the solution by Henry's law.
`rho_(CO)= chi_(CO)K_(H)`
`:. chi_(CO)=(rho_(CO))/(K_(H))=(0.22 "atm")/(6.20xx10^(4) "atm")=3.22xx10^(-7)`
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