#3 cannot use Cd(NH3)42+ or any cadmium salt
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#3 cannot use Cd(NH3)42+ or any
cadmium salt
CdC2O4(s) + 4 NH3 (aq) ←→ Cd(NH3)4+2 (aq)-C204-2(aq)...
For the equilibrium system: CD(s)⇔ C+(aq) + D- (aq) ; CD in solid state is pink....
For the equilibrium system: CD(s)⇔ C+(aq) + D- (aq) ; CD in solid state is pink. D- in aqueous solution is yellow. The saturated aqueous solution of this system is yellow. XD is a liquid that dissolves in water to form: XD(l) → X+(aq) + D- (aq) ; if XD is added to the this system which way does the equilibrium shift? A. right ; toward products B. no shift C. left ; toward reactants D. none of these
Consider a saturated aqueous solution of chromium (III) hydroxide, Cr(OH)3(s)?Cr3+(aq)+3OH?(aq) How will each of the following...
Consider a saturated aqueous solution of chromium (III)
hydroxide, Cr(OH)3(s)?Cr3+(aq)+3OH?(aq) How will each of the
following changes affect an equilibrium mixture?
Part C Additional solid chromium (II) hydroxide is added to the saturated solution of chromium (Il) hydroxide. shift equilibrium toward the reactants shift equilibrium toward the products O no affect Submit My Answers Give Up Part D 5 mL of 12 M HCI (aq) is added to the saturated solution of chromium (Il) hydroxide. shift equilibrium toward the reactants...
For the reaction CaC2O4(s) ++ Ca2(aq)+ C204(aq), K = 2.3 x 10. (next two questions) 14....
For the reaction CaC2O4(s) ++ Ca2(aq)+ C204(aq), K = 2.3 x 10. (next two questions) 14. What is the equilibrium expression for this reaction? 15. If someone mixed 1.00 mole of calcium ions with 0.500 mole of oxalate ions (1.00mol Ca2 and 0.500mol C2O42) in a 5.00L vessel, what would be the predominate species present at equilibrium? Which reactants and/or products would be present in appreciable amounts? 16. What general temperature and pressure conditions would cause a maximum yield of...
Scoring Scheme: 3-3-2-1 Part V. The chemical system containing the simultaneous equilibria involves the precipitation of...
Scoring Scheme: 3-3-2-1 Part V. The chemical system containing the simultaneous equilibria involves the precipitation of calcium oxalate in the presence of a weak diprotic acid, oxalic acid: Ca2+(aq) + C2042-(aq) ; CaC204(s) H2C204(aq) H20()FH30* (aq) HC204 (aq) HC204(aq)+ H20)H3(aq)+ C2042(aq) You added 10 drops of 6 M HCI to the solution of calcium chloride and oxalic acid. Which of the following statements explains your observations? a. The addition of H30t shifts the oxalic acid equilibria to the left, decreasing...
A (1) +3B (g) + 2 (aq) + 4D(g) + 7E(s) AH = 25 kJ/mole a)...
A (1) +3B (g) + 2 (aq) + 4D(g) + 7E(s) AH = 25 kJ/mole a) Write the equilibrium constant expression b) Would the reaction shift toward the products or reactants if the volume of the sealed react container was suddenly doubled? Would the reaction shift toward the products or reactants if the temperature was increase d) Would the reaction shift toward the products or reactants if more A was added? e) Would the value of K change in any...
A (1) +3B (g) + 2 (aq) + 4D(g) + 7E(s) AH = 25 kJ/mole a)...
A (1) +3B (g) + 2 (aq) + 4D(g) + 7E(s) AH = 25 kJ/mole a) Write the equilibrium constant expression b) Would the reaction shift toward the products or reactants if the volume of the sealed react container was suddenly doubled? Would the reaction shift toward the products or reactants if the temperature was increased di Would the reaction shift toward the products or reactants if more A was added? e) Would the value of K change in any...
BACKGROUND: Synthesis of Potassium Iron (III) Oxalate Hydrate Salt The iron(II) ions from Fe(NH4)2(SO4)2•6H2O will be precipitated as iron(II) oxalate. Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s) The su...
BACKGROUND: Synthesis of Potassium Iron
(III) Oxalate Hydrate Salt
The iron(II) ions from
Fe(NH4)2(SO4)2•6H2O
will be precipitated as iron(II) oxalate.
Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s)
The supernatant liquid, containing the ammonium and sulfate
ions, as well as excess oxalate ions and oxalic acid will be
decanted and discarded. The solid will then be re-dissolved and the
iron(II) ions will be oxidized to iron(III) ions by reaction with
hydrogen peroxide.
2Fe^2+(aq) + H2O2(aq) --> 2Fe^3+(aq) +2 OH^ - (aq)
The...
The following half-reactions occur during use of the rechargeable nickel-cadmium battery: Ca(OH)2(s) + 2e → Cd(s)...
The following half-reactions occur during use of the rechargeable nickel-cadmium battery: Ca(OH)2(s) + 2e → Cd(s) + 20H(aq) NiO(OH)(s) + H20(1) + e- → Ni(OH)2(s) + OH(aq) This battery has a potential of 1.35 V under standard conditions, with nickel as the cathode. What potential does this battery produce if its hydroxide ion concentration is 1.97 x 10-2 M? E = V the tolerance is +/-2%
consider the electrochemical cell 2H^+ (aq)+ Cd(s) = Cd^2+ (aq) + H2(g) Ecell°=0.40 V what would...
consider the electrochemical cell 2H^+ (aq)+ Cd(s) = Cd^2+ (aq) + H2(g) Ecell°=0.40 V what would increase measured cell potential reducing H+ in hydrogen cell increasing the mass of the solid CD electrode reducing cd^2+ ion concentration increasing pressure of hydrogen gas in hydrogen cell none when 1.00kj(1000 j) of heat is added to 50.0 g of water how should the temp of the water change?
prelab /postlab all questions please Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq)...
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
Consider a saturated aqueous solution of chromium (III)
hydroxide, Cr(OH)3(s)?Cr3+(aq)+3OH?(aq) How will each of the
following changes affect an equilibrium mixture?
Part C Additional solid chromium (II) hydroxide is added to the saturated solution of chromium (Il) hydroxide. shift equilibrium toward the reactants shift equilibrium toward the products O no affect Submit My Answers Give Up Part D 5 mL of 12 M HCI (aq) is added to the saturated solution of chromium (Il) hydroxide. shift equilibrium toward the reactants...
For the reaction CaC2O4(s) ++ Ca2(aq)+ C204(aq), K = 2.3 x 10. (next two questions) 14. What is the equilibrium expression for this reaction? 15. If someone mixed 1.00 mole of calcium ions with 0.500 mole of oxalate ions (1.00mol Ca2 and 0.500mol C2O42) in a 5.00L vessel, what would be the predominate species present at equilibrium? Which reactants and/or products would be present in appreciable amounts? 16. What general temperature and pressure conditions would cause a maximum yield of...
Scoring Scheme: 3-3-2-1 Part V. The chemical system containing the simultaneous equilibria involves the precipitation of calcium oxalate in the presence of a weak diprotic acid, oxalic acid: Ca2+(aq) + C2042-(aq) ; CaC204(s) H2C204(aq) H20()FH30* (aq) HC204 (aq) HC204(aq)+ H20)H3(aq)+ C2042(aq) You added 10 drops of 6 M HCI to the solution of calcium chloride and oxalic acid. Which of the following statements explains your observations? a. The addition of H30t shifts the oxalic acid equilibria to the left, decreasing...
A (1) +3B (g) + 2 (aq) + 4D(g) + 7E(s) AH = 25 kJ/mole a) Write the equilibrium constant expression b) Would the reaction shift toward the products or reactants if the volume of the sealed react container was suddenly doubled? Would the reaction shift toward the products or reactants if the temperature was increase d) Would the reaction shift toward the products or reactants if more A was added? e) Would the value of K change in any...
A (1) +3B (g) + 2 (aq) + 4D(g) + 7E(s) AH = 25 kJ/mole a) Write the equilibrium constant expression b) Would the reaction shift toward the products or reactants if the volume of the sealed react container was suddenly doubled? Would the reaction shift toward the products or reactants if the temperature was increased di Would the reaction shift toward the products or reactants if more A was added? e) Would the value of K change in any...
BACKGROUND: Synthesis of Potassium Iron
(III) Oxalate Hydrate Salt
The iron(II) ions from
Fe(NH4)2(SO4)2•6H2O
will be precipitated as iron(II) oxalate.
Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s)
The supernatant liquid, containing the ammonium and sulfate
ions, as well as excess oxalate ions and oxalic acid will be
decanted and discarded. The solid will then be re-dissolved and the
iron(II) ions will be oxidized to iron(III) ions by reaction with
hydrogen peroxide.
2Fe^2+(aq) + H2O2(aq) --> 2Fe^3+(aq) +2 OH^ - (aq)
The...
The following half-reactions occur during use of the rechargeable nickel-cadmium battery: Ca(OH)2(s) + 2e → Cd(s) + 20H(aq) NiO(OH)(s) + H20(1) + e- → Ni(OH)2(s) + OH(aq) This battery has a potential of 1.35 V under standard conditions, with nickel as the cathode. What potential does this battery produce if its hydroxide ion concentration is 1.97 x 10-2 M? E = V the tolerance is +/-2%
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
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