
Concept explainers
Interpretation:
To calculate the quantity of argon present in 1 L of air and to calculate the volume of air required to isolate 1 mol of argon at 1 atm pressure and 25 ∘C.
Concept introduction:
The pressure exerted by an individual gas in a mixture is known as its partial pressure.
Dalton’s law of partial pressure states that the total pressure of a mixture of gases is equal to the sum of the partial pressure of the component gases;
PTotal=P1+P2+P3+...
Dalton’s law can also be expressed using the mole fraction of gases, x;
P1=x(PTotal) (1)
The Ideal gas equation is written as,
PV=nRT (2)
Here,
The pressure of the gas is P
The volume of the gas is V
The gas constant is R
The total number of moles is n
The temperature of the system is T

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Chapter 21 Solutions
Chemistry & Chemical Reactivity
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