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For the reaction 2A (g) ® B (g), the equilibrium constant is Kp = 0.76. A reaction mixture initially contains 2.0 atm of each gas (PA = 2.0 atm and PB = 2.0 atm). Which statement is true of the reaction mixture? ( )

A. The reaction mixture is at equilibrium.
B. The reaction mixture will proceed toward products.
C. The reaction mixture will proceed toward reactants.
D. It is not possible to determine from the information given the future direction of the reaction mixture.

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Consider the reaction between NO and Cl2 to form NOCl: 2NO (g) + Cl2 (g) ® 2NOCl (g)A reaction mixture at a certain temperature initially contains only [NO] = 0.50 M and [Cl2] = 0.50 M. After the reaction comes to equilibrium, the concentration of NOCl is 0.30 M. Find the value of the equilibrium constant (Kc ) at this temperature. ( )

A. 11
B. 4.3
C. 6.4
D. 0.22

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For a thermochemical reaction: Cl2(g) + 1/2O2(g) ® Cl2O(g) DHorxn = 80.3 kJ, what is the value of DHorxn for the reaction 2Cl2O(g) ® 2Cl2(g) + O2(g)? ( )

A. -80.3 kJ
B. -160.6 kJ
C. 80.3 kJ
D. 160.6 kJ

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For a given reaction with DHorxnequal to 200 kJ, which statement is correct? ( )

A. The reaction is endothermic and the container of the reaction feels cool
B. The reaction is endothermic and the container of the reaction feels warm
C. The reaction is exothermic and the container of the reaction feels cool
D. The reaction is exothermic and the container of the reaction feels warm

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The DHorxn for which reaction is a standard enthalpy of formation? ( )

A. SnCl4(l) ® SnCl2(s) + Cl2(g)
B. SnCl2(l) ® Sn(s) + Cl2(g)
C. 2Cl2(g) + O2(g) ® 2Cl2O(g)
D. Cl2(g) + H2O(l) ® HCl(aq) + HOCl(aq)

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For the reaction 2A (g) ® B (g), the equilibrium constant is Kp = 0.76. A reaction mixture initially contains 2.0 atm of each gas (PA = 2.0 atm and PB = 2.0 atm). Which statement is true of the reaction mixture? ( )

A. The reaction mixture is at equilibrium. B. The reaction mixture will proceed toward products. C. The reaction mixture will proceed toward reactants. D. It is not possible to determine from the information given the future direction of the reaction mixture.

For a thermochemical reaction: Cl2(g) + 1/2O2(g) ® Cl2O(g) DHorxn = 80.3 kJ, what is the value of DHorxn for the reaction 2Cl2O(g) ® 2Cl2(g) + O2(g)? ( )

For a given reaction with DHorxnequal to 200 kJ, which statement is correct? ( )

The DHorxn for which reaction is a standard enthalpy of formation? ( )

A. The reaction mixture is at equilibrium.
B. The reaction mixture will proceed toward products.
C. The reaction mixture will proceed toward reactants.
D. It is not possible to determine from the information given the future direction of the reaction mixture.