equlibrium equations
Magnesium hydoxide is only very slightly soluble inwater. The reaction by which it goes into solution is :
Mg(OH)2? Mg2+ +2OH-
a. Formulate the expression for the equilibrium constant, Ksp, for he above reaction.
b. It is possible to dissolve significant amounts of Mg(OH)2 in solutions in which the concentration ofeither Mg2+ or OH- is very , very small. Explain, using Ksp, whythis is thecase.
c. Explain why Mg(OH)2 might have very appreciable solubility in 1 M HCl.
Homework Answers
Q(b) In case Mg+2 or OH- is small ; the concentration of other ions increases in order
to keep Ksp constant.
Q(c) Mg(OH)2 + 2 HCl ---->MgCl2(aq)+ 2H2O(l) ; this reaction is responsible for
increased solubility of Mg(OH)2.
2 a, b and c Experiment 22 Properties of Systems in Chemical Equilbrium-Le Chatelier's Principle Magnesium...
2 a, b and c
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1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
Section Name Experiment 2 Advance Study Assignment: Properties of Systems in Chemical Equilibrium 1. Methyl orange,...
Section Name Experiment 2 Advance Study Assignment: Properties of Systems in Chemical Equilibrium 1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) H(aq) + MO (aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH...
The concentration of Mg2+ at equilibrium (25oC) is 0.000144 M. What is the value of Ksp...
The concentration of Mg2+ at equilibrium
(25oC) is 0.000144 M. What is the value of
Ksp at this temperature?
In the solubility rules, Mg(OH)2 was listed as an "insoluble" salt. It is actually slightly soluble in an equilibrium reaction: Mg (OH)2 (s) Mg2+ (aq) 20H (aq) The concentration of Mg2+ at equilibrium (25°C) is 0.000144 M. What is the value of Ksp at this temperature? Submit Answer Tries o/99
Question 5 [11 marks] A seawater which serves as a useful commercial source of magnesium compounds...
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Magnesium (Mg2+) makes water hard, which prevents soaps and detergents for working properly. Therefore, drinking water...
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Milk of magnesia is only slightly soluble in water. Kc for the reaction Mg(OHs)(s)>Mg2+(a) + 2OH-1(aq) is 5.6x10^-12. How many moles of Mg2+ and how many moles of OH-1 will exist at equilibrium in 5L saturated solution of Mg(OH)2? Does the answer make sense? Please help!
What is Ksp for the following equilibrium if Mg(OH)2 has a molar solubility of 1.1×10−4 M?...
What is Ksp for the following equilibrium if Mg(OH)2 has a molar solubility of 1.1×10−4 M? Mg(OH)2(s)↽−−⇀Mg2+(aq)+2OH−(aq)
The following questions involve the following equilibrium system: &nbs
The following questions involve the following equilibrium system: Cd(OH)2 (s) ----> Cd2+ (aq) + 2OH- (aq) Write the solubility product constant expression for a saturated solution of Cd(OH)2. Determine the molar solubility of Cd(OH)2. The Ksp value for Cd(OH)2 is 1.2 x 10-14. If a 100.0 mL sample of the saturated solution of Cd(OH)2 is titrated with 0.00100 M HCl, how many mL of HCl would be required to neutralize this solution? Write the molecular, complete ionic, and net...
10. 217 points Previous Answers (a) Using only Ksp from the equilibria of alkaline earth metal...
10. 217 points Previous Answers (a) Using only Ksp from the equilibria of alkaline earth metal hydroxides table, calculate how many moles of Mg(OH)2 will dissolve in 500 mL of water. 0 .000056 X mol (b) How will the solubility calculated in part (a) be affected by the Ky reaction in this table? (Select all that apply.) The dissolution reaction will be drawn to the right. The dissolution reaction will be drawn to the left. The solubility of Mg(OH), will...
2 a, b and c
Experiment 22 Properties of Systems in Chemical Equilbrium-Le Chatelier's Principle Magnesium hydroxide is only very slighly soluble in water. The reaction by which it goes into solution is: Mg(OH),6)Mg (a)+20H (ag) a. Formulate the expression for the equilibrium constant, Kr for the above reaction. b. It is possible to dissolve significant amounts of Mg(OH), in solutions in which the concentration of or OH is kept very, very small. Explain, using Kg why this is the...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
Section Name Experiment 2 Advance Study Assignment: Properties of Systems in Chemical Equilibrium 1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) H(aq) + MO (aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH...
The concentration of Mg2+ at equilibrium
(25oC) is 0.000144 M. What is the value of
Ksp at this temperature?
In the solubility rules, Mg(OH)2 was listed as an "insoluble" salt. It is actually slightly soluble in an equilibrium reaction: Mg (OH)2 (s) Mg2+ (aq) 20H (aq) The concentration of Mg2+ at equilibrium (25°C) is 0.000144 M. What is the value of Ksp at this temperature? Submit Answer Tries o/99
Question 5 [11 marks] A seawater which serves as a useful commercial source of magnesium compounds contains a magnesium ion concentration of 0.054 mol dm? The magnesium is precipitated from solution by adding calcium hydroxide. Mg2+ (aq) + Ca(OH)2 (s) → Ca2+(aq) + Mg(OH)2 (s) a) Write an expression for the Ksp of Mg(OH)2, including its units. [3] b) [2] ) The numerical value for Ks is 2.00 x 10-11. Calculate [Mg2+ (aq)] in a saturated solution of Mg(OH)2. Hence...
10. 217 points Previous Answers (a) Using only Ksp from the equilibria of alkaline earth metal hydroxides table, calculate how many moles of Mg(OH)2 will dissolve in 500 mL of water. 0 .000056 X mol (b) How will the solubility calculated in part (a) be affected by the Ky reaction in this table? (Select all that apply.) The dissolution reaction will be drawn to the right. The dissolution reaction will be drawn to the left. The solubility of Mg(OH), will...
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