Question

A mixture of gases contains 3 moles of oxygen and 2 moles of hydrogen at NTP. The partial pressure of oxygen in the mixture will be A) 0.1 atm B) 1 atm C) 0.6 atm D) 0.4 atm​

Answer 1

Explanation:

But where u given total pressure

For calculating partial pressure

You should give total pressure also

By Dalton Law

Partial pressure of gas = mole fraction of gas × Total pressure

Answer 2

Answer:

(C)Partial pressure of oxygen is 0.6atm.

Explanation:

Total number of moles of oxygen and hydrogen = 2+3 =5 moles

According to dalton's law : $P_c=X_c*P_T$

where, $P_c$ is the partial pressure of a gas.

$P_T$ is the total pressure of gases.

$X_c$ is mole fraction of a gas.

Mole fraction of oxygen = $\frac{3}{5}$=$0.6$

$P_c = 0.6 * 1 = 0.6atm$

Partial pressure of oxygen is 0.6atm. (C) is the correct option

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