Give the equation for a supersaturated solution in comparing Q with Ksp.
A. |
Q ≠ Ksp |
|
B. |
Q = Ksp |
|
C. |
Q < Ksp |
|
D. |
Q > Ksp |
|
E. |
None of the above. |
Correct option : D
Ans. The ion product of a supersaturated product is greater than its solubility product.
A Q > Ksp of a solution thus causes the dissolution of greater amount of the solutes without getting precipitated. Thus, such condition leads to formation of super saturated solution.
At, Q = Ksp , the concentration of ions is at equilibrium- not net dissolution or precipitation.
At, Q < Ksp, the solute precipitates.
Give the equation for a supersaturated solution in comparing Q with Ksp. A. Q ≠ Ksp B. Q = Ksp...
Which of the following would decrease the Ksp for AgCl? Which of the following would decrease solubility of AgCl? A. Increasing the pH of the solution B. Adding a solution of AgNO3 C. Adding a solution of KCl D. Adding a solution of KI E. None of the above Select one: a. Only E; Only B and C b. Only B and C; Only A c. Only A; Only B and C d. Only B and C; E e. Only...
14. Ksp for Fe(IO3)3 is 1x10" Upon mixing two solutions, the Fetis 1x10'M and the 10;' is 1x10 M. Which one of the following statements is true? a. A precipitate forms because Ksp <Q. b. A precipitate forms because Ksp > Q. c. No precipitate forms because Ksp <Q. d. No precipitate forms because Ksp > Q. e. None of these statements is true. 15. Which of the following statements regarding complex ions is true? a. Complex ions are formed...
Calculate Q to determine whether or not a precipitate will form in a solution containing 0.043 M Ca(NO3)2 and 0.0055 M NaF. Step 1: identify the possible precipitate. In this example, it is CaF2. Look up its Ksp value (table 16.2). Step 2: Write a balanced equation for dissolution of CaF2: Step 3: Write the equation for Ksp for CaF2: Step 4: Write an expression for Q: Step 5: Plug in the concentrations above to calculate Q: Step 6: Compare...
Q.22 Consider the following regression equation: y = 2.5x - 0.85. What is the Y-intercept? a. 24.15 b. -0.85 c. 25.85 d. 2.5 e. None of the above
2. Which compound has the highest molar solubility in neutral aqueous solution? (A) ZnS. Ksp-3x10-23 (B) Agl, Ksp 8.52x10-17 (C) BaCO, Ksp 2.58x10 ) Fe(OH)3, Ksp-2.79x10-39 (E) Pblz, Ksp 8.7x10 3. A solution contains 0.01 M Pb2+ and 0.01 M Agt What happens when Na SO(s) is added to bring SO1 to 0.01 M? (Kp(PbSO.)-1.6x10-8. Ksp(Ag SO4) 4x10.) Neither PbSO4 nor Ag SO4 precipitate (B) Both PbSO4 and Ag SO4 precipitate (C) AgaSO4 selectively precipitates. (D) PbSO4 selectively precipitates. 4....
Question 11 Give the form of a particular solution of (4) – 16y-2 e 2x+3e" + cos2x) – 1 a) z-Axe* + Be **+Ccos(2x) + sin(2x) + E d) Axe 2+Be+Cx cos(2x) +Dx sin(2x) +B 3-Axe* +Be+3+ Cx cos(2x) +Dx sin(2x) + E 2=Axe 2+36-3x+cos(2x) + sin(2x) -Ae 2*+Be9*+ C'x cos(2x) + DX sin(2x) + E None of the above. e) f) Question 12 Give the form of a particular solution of J14) - 4 7 " +13 y" –...
#18 the last word is uncertainty and the equation is q=e^x #20 The scentence reads: "The equivalent capcitance of this combination_____________" 18. Suppose you measure x to be (3.0 ± 0.1) and then calculate q"e". What is q with its uncertain (a) C0.086 t 0.001) b) (20.086 0.005) (d) (20s 2) (e) None of the above 19. GivenI (12.4 0.3) amps, how precisely do you need to determine the resistance of a roughly 100 ohm resistor so that the error...
The general solution to equation y" - 2y - 3y=0 is a. y=1e3! + ce- b. y=ce" + ce-1 C. y = c + c2e- d. none of the above
The Ksp of AgCl at 25 °C is 1.6 x 10-10. Consider a solution that is 1.0 x 10-2 M in CaCl2 and 1.0 x 10-8 M in AgNO3. A. Q> Ksp and a precipitate will form. B.Q> Ksp and a precipitate will not form. OC.Q<Ksp and a precipitate will not form. D.Q<Ksp and a precipitate will form. E. The solution is saturated.
Precipitation is the formation of an insoluble substance. For the equation AB(s)⇌A+(aq)+B−(aq), precipitation represents a shift to the left and the production of a solid. From Le Châtelier's principle, we know that when the product of the concentrations of A+ and B− gets above a certain level, the reaction will respond by shifting left to decrease the concentrations of A+ and B−. This critical level, Ksp, is a constant at a certain temperature. In this case, Q=[A+][B−], where Q is...