7. The Clausius-Clapeyron equation, which is used to determine the heat of vapor

Question

7. The Clausius-Clapeyron equation, which is used to determine the heat of vaporization of a liquid through a plot of In P versus 1/T, is based on the following assumption(s). a) The vapor and the liquid are in thermal equilibrium. b) The molar volume of liquid phase is negligible compared to the molar volume of vapor c) The vapor behaves as ideal gas d) All of above. 8. Using the initial rate method and isolation method, it has been determined the 1 order with respect to KI, 1" order with respect to KBro3, and 2d order with respected to HCI. If the concentrations of all reactants are doubled, the rate of reaction will a) be doubled, too. b) increase by a factor of 6. d) none of above. c) increase a factor of 16 9. The purpose to place a fine-porosity glass frit in the middle of the galvanic cell is a) to connect two electrodes allowing a current to flow from the anode to the cathode. b) to balance the effect of the electron flow, which causes the anode to become much more negative than the cathode. c) to fully separate the anode from the cathode forcing the current to flow through a wire connecting them. d) to compensate for the charge that flows in the external circuit. 10. The rate of reaction increase as the temperature increases for the iodine clock reaction, because a) more molecules have enough kinetic energy to react at higher temperature. b) the activation energy increase as temperature increases. c) the enthalpy of reaction increases as temperature increase. d) all of above.

Explanation / Answer

Q7. The correct option is (d) all of the above

Q8. Given: R = k [KI]1 [KBrO3]1 [HCl]2

When concentration of all the reactants are doubled,

R = k [2 KI]1 [2 KBrO3]1 [2 HCl]2

R = k 2 x 2 x 4 [KI]1 [KBrO3]1 [HCl]2

R = 16 k [KI]1 [KBrO3]1 [HCl]2

Hence the correct option is (c) increase a factor of 16

Q9. The correct option is (b) It maintains electrical neutrality within the internal circuit, preventing the cell from rapidly running its reaction to equilibrium.

Q10. The correct option is (a) more molecules have enough kinetic energy to react at higher temperature. More molecules converts to product

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