JAMB Chemistry 2014 Objective — Question 4
Question 4 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2014 Objective paper, with the correct answer and a full explanation.
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200 cm³ of gas at 25°C exerts a pressure of 700mmHg. Calculate its pressure if its volume increases to 350 cm³ at 75°C.
- A. 400.00mmHg
- B. 342.53mmHg
- C. 1430.54mmHg
- D. 467.11mmHgCorrect
Explanation
V1=200cm³,T1=298K,P1=700mmHg,P2=?,V2=350cm³,T2=348K. P1V1/T1=P2V2/T2. P2=(700×200×348)/(350×298) ≈ 467.11mmHg.
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