Question

When the temperature is decreased on the following system at equilibriunm 2 HCI(ag)+Zn(s)2nCl (aq)+H(g)+ heat a. The reaction In order to restore equilibrium, the reaction shift towards the products The reaction will not shift at all because b. will not shift at all because equilibrium is independent of reaction rate c. d. In order equilibrium is independent of temperature to restore equilibrium, the reaction shift towards the reactants 8. The titration of a weak acid two equivalence point between the mtyth Na0H showed two equivalence points. Please determine the relationship ) and normality (N) of this acid solution. a. N M 9. Which of the following is an example of freezing point depression? a Desalination of sea water to produce fresh wat er Melting ice on roads with salt during the winter c. Boling water in a pressure cooker d. Sublimation of carbon dioxide 10. The overall order of the reaction with the following rate law is: Rate k[s a. 2.5 b. 1.5 c. 0.5 d. 2.0 11. If the pH at one-half the first and second equivalence points of a diprotic acid is 3.20 and 7.45, respectively, which of the following is correct? a. pKa -3.20 b. Ka 7.45 ?.??? = 1003.20 d. pKa 10745 12. Which reagent can be used to precipitate Group I cations? a NHs b HCI Has 4 CH CSNH 8. Which kind of test paper should be used if you need to adjust the pH-0.52 a. Red litmus paper b. Blue litmus paper c. Short range alkacid paper d. Wide range alkacid paper

Answer 1

Answer -

7.B

The reaction shift towards product side.Heat is more released when decrease in temperature accoring to Li's Principle.

10.A.

overall order of reaction- 1+1.5= 2.5

12.B

Group 1st reagent -HCl

9.B-

melting road ice with salt, to decrease in depression of frezzing temperature.