d. the system reaches equilibrium More quickly e. all of the above 25. When soli
ID: 1074390 • Letter: D
Question
d. the system reaches equilibrium More quickly e. all of the above 25. When solid lead(lI)chloride is in equilibrium with its ions, the ratio of lead(lI) ion to chloride ion is which of the following? a. b. 2:1 c. 1:2 d. 1:3 e. 3:1 26. In a saturated solution prepared from PbBr, the concentration of Bri is 8.2 x 102 mo/L. The [Pba*] in mo/L is which of the following? 8.2 × 10-2 b. 4.1 x 102 c. 0.16 d. 0.24 27. What will happen to the following equilibrium if silver ions are added to the solution? AgNO3(s) Ag(aq) + NO(aq) There will be no change. a. b. c. d. The equilibrium will shift to the left. The equilibrium will shift to the centre. The equilibrium will shift to the right. 8. When a solid is dissolved in water, it separates into its constituent ions. If a new compound with an identical anion is dissolved in the same solution, this will drive the equilibrium to the left. This process is known as a. the common ion effect b. Le Chatelier's principle collision theory Dalton's law of partial pressures c. d.Explanation / Answer
25.
PbCl2(s)< --------------------->Pb^2+ (aq) + 2Cl^- (aq)
The ration of Pb^2+ and Cl^- ions = 1:2
c.1:2
26.
PbBr2(s) --------------------> Pb^2+ (aq) + 2Br^- (aq)
1 2
The ration of Pb^2+ and Br^- = 1:2
4.1*10^-2 : 8.2*10^-2
[Br^-] = 8.2*10^-2mole/L
[Pb^2+] = 4.1*10^-2 mole/L
b.4.1*10^-2 mole/L
27.
AgNO3(aq) --------------------> Ag^+ (aq) + NO3^-(aq)
The conc of products are increases the equilibrium shift to left side.
The conc of Ag^+ added the equilibrium shift to left side.
b. The equilibrium will shift to the left
28.
The same ions are present in equilibrium is called common ion effect.
a. the common ion effect
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