Ideal Gas Law

AP Chemistry· difficulty 4/5

A 2.50 L container holds N2_2 at 25°C and 1.50 atm. The container is heated to 75°C and the pressure rises to 1.85 atm. The new volume (in L) is approximately

  • A

    2.83 L

  • B

    1.97 L

  • C

    2.34 L

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  • D

    2.50 L

Explanation

Combined gas law: P1V1T1=P2V2T2\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}. T1=298T_1 = 298 K, T2=348T_2 = 348 K. V2=(1.50)(2.50)(348)/((298)(1.85))=2.37V_2 = (1.50)(2.50)(348)/((298)(1.85)) = 2.37 L ≈ 2.34 L.

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