题目内容

7.81 ( ) = 78.1 ml ( )

A. x10-4 m3
B. x104 mL
C. x 10-1 d3
D. x 106 nL

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A mixture of 5.0 ´ 10-5 mol H2(g) and 5.0 ´ 10-5 mol SO2(g) is placed in a 10.0 L container at 25 oC. The container has a pinhole leak. After a period of time, the partial pressure of H2 in the container ( )

A. is less than that of the SO2(g)
B. is equal to that of the SO2(g)
C. exceeds that of the SO2(g)
D. is the same as in the original mixture

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For the dissociation reaction 2 H2S(g) « 2 H2(g) + S2(g), Kp = 1.2 ´ 10-2 at 1065 oC. For this same reaction at 1000 K ( )

A. Kc is less than Kp
B. Kc is greater than Kp
C. Kc= Kp
D. whether Kc is less than, equal to, or greater than Kp depends on the total gas pressure.

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The volume of the reaction vessel containing an equilibrium mixture in the reaction SO2Cl2(g) « SO2(g) + Cl2(g) is increased. When equilibrium is re-established, ( )

A. the amount of Cl2 will have increased
B. the amount of SO2 will have decreased
C. the amounts of SO2 and Cl2 will have remained the same
D. the amount of SO2Cl2will have increased

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The standard molar enthalpy of formation of CO2(g) is equal to ( )

A. 0
B. the standard molar heat of combustion of graphite
C. the standard molar heat of combustion of CO(g)
D. the sum of the standard molar enthalpies of formation of CO(g) and O2(g)

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7.81 ( ) = 78.1 ml ( )

A. x10-4 m3 B. x104 mL C. x 10-1 d3 D. x 106 nL

A mixture of 5.0 ´ 10-5 mol H2(g) and 5.0 ´ 10-5 mol SO2(g) is placed in a 10.0 L container at 25 oC. The container has a pinhole leak. After a period of time, the partial pressure of H2 in the container ( )

For the dissociation reaction 2 H2S(g) « 2 H2(g) + S2(g), Kp = 1.2 ´ 10-2 at 1065 oC. For this same reaction at 1000 K ( )

The volume of the reaction vessel containing an equilibrium mixture in the reaction SO2Cl2(g) « SO2(g) + Cl2(g) is increased. When equilibrium is re-established, ( )

The standard molar enthalpy of formation of CO2(g) is equal to ( )

A. x10-4 m3
B. x104 mL
C. x 10-1 d3
D. x 106 nL