Neco Model Questions Vol1 2018 Physics Question 23

Practice objective / multiple choice question 23 from the 2018 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2018 Physics Objective / Multiple Choice Medium Difficulty
Question 23 NECO_MODEL_QUESTIONS_VOL1 • 2018 • PHYSICS • objective

A sealed rigid container of volume \(2.0\ \text{L}\) contains a mixture of oxygen and nitrogen at \(27^{\circ}\text{C}\) and a total pressure of \(750\ \text{mmHg}\). The partial pressure of oxygen is twice that of nitrogen. The container is then heated to \(127^{\circ}\text{C}\) while remaining sealed. (i) Determine the initial partial pressures of oxygen and nitrogen (in mmHg). (ii) Find the total pressure of the gas mixture after heating, expressed in kilopascals (kPa) to one decimal place.

Answer Options

Correct Answer A. p_N2 = 250 mmHg, p_O2 = 500 mmHg; total pressure = 133.3 kPa
B. p_N2 = 300 mmHg, p_O2 = 600 mmHg; total pressure = 150.0 kPa
C. p_N2 = 200 mmHg, p_O2 = 400 mmHg; total pressure = 120.0 kPa
D. p_N2 = 250 mmHg, p_O2 = 500 mmHg; total pressure = 120.0 kPa
Correct Answer
A
Correct Option:
p_N2 = 250 mmHg, p_O2 = 500 mmHg; total pressure = 133.3 kPa

About This Question

This is Neco Model Questions Vol1 2018 Physics Question 23. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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