The pressure on 100cm 3 of oxygen gas at 35°C is 750mm of Hg. What...

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The pressure on 100cm3 of oxygen gas at 35°C is 750mm of Hg. What would be the volume of the gas if the pressure is increased to 1000mm of Hg without changing the temperature?

  • A) 133.3cm3
  • B) 85cm3
  • C) 75cm3
  • D) 65cm3

Correct Answer: C) 75cm3

Explanation

\(V_1 = 100\)cm\(^3\), \(T_1 = 35^{\circ}\)C, \(P_1 = 750\)mm, \(P_2 = 100\)mmHg\(\cfrac{P_1V_1}{T_1} = \cfrac{P_2V_2}{T_2}\) at constant temperature\(P_1V_1 = P_2V_2\)\(\therefore\) \(V_2 = \cfrac{P_1V_1}{T_2}\)\(V_2 = \cfrac{750 \times 10}{1000} = 75\)cm\(^3\)


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