Iron thiocyanate (FeSCN2+) is a complex ion that appears orange-red in solution. Iron(III) (Fe3+) and thiocyanate...
Iron thiocyanate (FeSCN2+) is a complex ion that appears orange-red in solution. Iron(III) (Fe3+) and thiocyanate (SCN-) are both colorless in solution.
FeSCN2+ (aq) --(equilibrium)-- Fe3+ (aq) + SCN- (aq)
a) If you add Fe(NO3)3 to a solution of these ions at equilibrium, in which direction will the reaction run to reach a new equilibrium?
b) Silver ions react with thiocyanate ions to form a white precipitate. If you add silver ions to a solution of these ions at equilibrium, in which direction will the reaction run to reach a new equilibrium?
c) Hydroxide ions react with iron(III) ions to form a precipitate, Fe(OH)3. If you add sodium hydroxide to a solution of these ions at equilibrium, will the solution become darker or lighter in color?
Homework Answers
A) if we add Fe(NO3)3 to solution it will furnish Fe+3 and the reaction will move backward to reach the equilibrium.
B) if we add Ag+ ions to the solution then it will consume thicynate ions and then the concentration of these ions will decrease in the solution and reaction will move forward.
C) the solution will be lighter in colour because OH- ions will react with Fe+3 and then Fe+3 will decrease in solution and more salt is dissociated so reaction will move forward
Add Answer to:
Iron thiocyanate (FeSCN2+) is a complex ion that
appears orange-red in solution. Iron(III) (Fe3+) and
thiocyanate...
2. The reaction Fe3+ (aq) + SCN (aq) → FeSCN2+ (aq) produces a dark red color...
2. The reaction Fe3+ (aq) + SCN (aq) → FeSCN2+ (aq) produces a dark red color resulting from the formation of FeSCN2+. a. How does the color change if you add more SCN to a solution at equilibrium? (lighter or darker) b. How does the color change if you remove Fe3+ by reacting it with fluoride ions? c. If a reaction proceeds forward when you heat it, and reverse when you cool it, the reaction is [endothermic exothermic).
In this experiment, we will be studying the reaction of the iron(III) ion with the thiocyanate...
In this experiment, we will be studying the reaction of the iron(III) ion with the thiocyanate ion to form the red-colored complex ion pentaaquathiocyanatoiron(III), [Fe(H20)s(SCN)]?". As we will learn later, the Fetion in water is actually better represented as a complex ion with 6 water molecules attached to the central iron, [Fe(H20)] (aq). The SCN ion replaces one of the water molecules attached to the Fe" in the following reaction. [Fe(H2O).] (aq) + SCN (aq) [Fe(H2O)(SCN)]2(aq) + H2O(1) AH° (-)...
My question is #2 for the reaction Fe3+ (aq) + SCN- (aq) FeSCN2+ (aq). The goal...
My question is #2 for the reaction Fe3+ (aq) + SCN- (aq)
FeSCN2+ (aq). The goal is to predict the color change (darker or
lighter) for test tubes 2-8. I have attached the supplemental
sheets given to help with the problem. The test tubes 2-8 are being
manipulated either by temperature or things being added which can
be seen by one of the pictures.
2. For reaction "UCTIONS are increased by the same amount. Fe3+ (aq) + SCN (aq) $...
2. If the reaction between iron(III) ion and thiocyanate ion yielded an equilibrium concentration of 0.30...
2. If the reaction between iron(III) ion and thiocyanate ion yielded an equilibrium concentration of 0.30 M for each of these ions, what is the equilibrium concentration of the red iron(III)-thiocyanate complex? (Hint: The equilibrium constant for the reaction is in the Background section.) Show your work 3. In the reaction below, NH3(g) + H2O(1) - NH; +H30+ the equilibrium constant is 10-34. Is this reaction likely to take place? Explain your answer. iron(III) and thiocyanate ions, the equilibrium expression...
1. The reaction below competes with the formation of the FeSCN2+ complex: Fe3+ (aq) + 4C1-(aq) ye...
Please help!
1. The reaction below competes with the formation of the FeSCN2+ complex: Fe3+ (aq) + 4C1-(aq) yellow FeCI(aq) colorless Explain what would happen to the color of a dilute solution containing FeCIzif you added a solution containing silver ion, Agt. (Silver ion reacts with chloride ion in solution to form the precipitate AgCl.) a. b. you added a solution of sodium chloride, NaCl c. you added concentrated HCL.
1. The reaction below competes with the formation of the...
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),...
Based on your values of ?C for both of the iron-thiocyanate complexes, determine which of the...
Based on your values of ?C for both of the iron-thiocyanate complexes, determine which of the following is the predominate equilibrium reaction. Explain your reasoning in your discussion. Step 1: Fe3+(??) + SCN-(??) FeSCN2+(??) Step 2: FeSCN2+(??) + SCN-(??) Fe(SCN)2+(??) Kc values for FeSCN2+: 115.50, 148.55, 167.59, 155.97, 151.14 Kc values for Fe(SCN)2+: 434527, 230217, 175869, 118191, 90321
The following data were taken to determine the equilibrium constant of the Iron(III)-Thiocyanate Complex Ion:...
The following data were taken to determine the equilibrium constant of the Iron(III)-Thiocyanate Complex Ion: Tube .00200 M KSCN (ml) .00200 M Fe(NO3)3 (ml) Absorbance 2 8 2 .480 4 5 5 .720 6 2 8 .448 The product of eb = 6120 L/mol. Determine the [Fe(SCN] in tube 2 Determine what the concentration of the Iron(III) in tube 2 would be if none of it reacted. Determine what the concentration of the thiocyanate ion in tube 2 would...
Fe (aq)SCN-(aq) FeSCN (aq) thiocyanate iron(II) thiocyanoiron(il) Introduction When the reactants shown above, are combined, chemical...
Fe (aq)SCN-(aq) FeSCN (aq) thiocyanate iron(II) thiocyanoiron(il) Introduction When the reactants shown above, are combined, chemical equilibrium is reached rapidly. Once equilibrium is established, the equilibrium constant can be calculated if the concentration of all the ions are known: [FeSCNP.he [SCN-... and (Feng Your task is to prepare three different equilibrium systems that contain different concentrations of these ions. Keep in mind that although the concentrations will be different, the value of the equilibrium constant Ke will be indeed constant...
why? C. Iron(III)-Thiocyanate Equilibrium Fe (aq)+ SCN (aq)FesCN (aq) Record your observations and write explanations for...
why?
C. Iron(III)-Thiocyanate Equilibrium Fe (aq)+ SCN (aq)FesCN (aq) Record your observations and write explanations for SCN solution to the P e(NO,) solution. turmed deer e 2. the results of your procedure, is the equilibrium exothermic or endothermic? Esplainemie 176
2. The reaction Fe3+ (aq) + SCN (aq) → FeSCN2+ (aq) produces a dark red color resulting from the formation of FeSCN2+. a. How does the color change if you add more SCN to a solution at equilibrium? (lighter or darker) b. How does the color change if you remove Fe3+ by reacting it with fluoride ions? c. If a reaction proceeds forward when you heat it, and reverse when you cool it, the reaction is [endothermic exothermic).
In this experiment, we will be studying the reaction of the iron(III) ion with the thiocyanate ion to form the red-colored complex ion pentaaquathiocyanatoiron(III), [Fe(H20)s(SCN)]?". As we will learn later, the Fetion in water is actually better represented as a complex ion with 6 water molecules attached to the central iron, [Fe(H20)] (aq). The SCN ion replaces one of the water molecules attached to the Fe" in the following reaction. [Fe(H2O).] (aq) + SCN (aq) [Fe(H2O)(SCN)]2(aq) + H2O(1) AH° (-)...
My question is #2 for the reaction Fe3+ (aq) + SCN- (aq)
FeSCN2+ (aq). The goal is to predict the color change (darker or
lighter) for test tubes 2-8. I have attached the supplemental
sheets given to help with the problem. The test tubes 2-8 are being
manipulated either by temperature or things being added which can
be seen by one of the pictures.
2. For reaction "UCTIONS are increased by the same amount. Fe3+ (aq) + SCN (aq) $...
2. If the reaction between iron(III) ion and thiocyanate ion yielded an equilibrium concentration of 0.30 M for each of these ions, what is the equilibrium concentration of the red iron(III)-thiocyanate complex? (Hint: The equilibrium constant for the reaction is in the Background section.) Show your work 3. In the reaction below, NH3(g) + H2O(1) - NH; +H30+ the equilibrium constant is 10-34. Is this reaction likely to take place? Explain your answer. iron(III) and thiocyanate ions, the equilibrium expression...
Please help!
1. The reaction below competes with the formation of the FeSCN2+ complex: Fe3+ (aq) + 4C1-(aq) yellow FeCI(aq) colorless Explain what would happen to the color of a dilute solution containing FeCIzif you added a solution containing silver ion, Agt. (Silver ion reacts with chloride ion in solution to form the precipitate AgCl.) a. b. you added a solution of sodium chloride, NaCl c. you added concentrated HCL.
1. The reaction below competes with the formation of the...
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),...
Fe (aq)SCN-(aq) FeSCN (aq) thiocyanate iron(II) thiocyanoiron(il) Introduction When the reactants shown above, are combined, chemical equilibrium is reached rapidly. Once equilibrium is established, the equilibrium constant can be calculated if the concentration of all the ions are known: [FeSCNP.he [SCN-... and (Feng Your task is to prepare three different equilibrium systems that contain different concentrations of these ions. Keep in mind that although the concentrations will be different, the value of the equilibrium constant Ke will be indeed constant...
why?
C. Iron(III)-Thiocyanate Equilibrium Fe (aq)+ SCN (aq)FesCN (aq) Record your observations and write explanations for SCN solution to the P e(NO,) solution. turmed deer e 2. the results of your procedure, is the equilibrium exothermic or endothermic? Esplainemie 176
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