A gas has a volume of 0.60L at 161K. Once heated, the same gas now has a volume of 14.1L at 279K and 2.44atm. What was the origi
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Step first:
Since, 78.0 percent by volume is present in the air which implies there are 78 moles of
present in 100 moles of air.
Now,
Mole fraction of =
Mole fraction =
= 0.78
Partial pressure is equal to the multiplication of total pressure and mole fraction.
Partial pressure = (as 1 atm is atmospheric pressure)
= 0.78 atm.
Step second:
Henry's law constant is calculated by:
where,
is solubility of gas
is partial pressure of gas
is henry's law constant
Substitute the value of solubility and partial pressure to find the value of Henry's law constant in above formula:
k =
=
Thus, Henry's Law constant is .