Chapter 12, Problem 3STP

Interpretation Introduction

Interpretation:

Correct option regarding the partial pressure of Ar must be chosen from the given list.

Concept introduction:

According to Dalton’s law of partial pressure the sum of partial pressure of all the gases present in the container is equal to the total pressure.

Answer to Problem 3STP

Correct answer: Option B is correct.

Explanation of Solution

Reason for correct option: Option B is correct because Partial pressure of Ar is 1.734 atm.

Partial pressure of Ar

$\begin{array}{l}\text{=(total pressure-partial pressure of Kr-partial pressure of Ne)}\\ \text{=(3}\text{.782-0}\text{.435-1}\text{.613) atm=(3}\text{.782-2}\text{.048) atm=1}\text{.734 atm}\text{.}\end{array}$

Conclusion

Reasons for incorrect options: Option A is incorrect as partial pressure of Ar is not 2.048 atm.

Option C is incorrect as partial pressure of Ar is not 1556 atm.

Option D is incorrect as partial pressure of Ar is not 1318 atm.