Question

A gaseous mixture was prepared by taking equal mole of $CO$ and $N_2$. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen $\left(N_2\right)$ in the mixture is:

• A. 0.5 atm
• B. 0.8 atm
• C. 0.9 atm
• D. 1 atm

Answer 1

The correct option is A 0.5 atm

Since the number of moles of $CO$ and nitrogen are equal, their mole fractions will be 0.5 each.

The partial pressure of the nitrogen in the mixture is equal to the product of mole fraction of nitrogen and total pressure.

It is $0.5\times 1=0.5$ atm.