Homework Answers
1) Deep red color appears due to [Fe(SCN)]2+ complex formation.
Here ligand to metal charge transfer occurs. so deep red color obtained.
2) During this reaction complexation occurs. Fe-SCN bond is strong bond. Hence energy is released during this reaction.
Add Answer to:
why?
C. Iron(III)-Thiocyanate Equilibrium Fe (aq)+ SCN (aq)FesCN (aq) Record your observations and write explanations for...
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...
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,...
FesCN (aq), and LeChâtelier's Explain in terms of the equation, Fe" (aq) + SCN (aq) Principle...
FesCN (aq), and LeChâtelier's Explain in terms of the equation, Fe" (aq) + SCN (aq) Principle (4 ) Observation after adding KSCN: turned darker more red like original solution brown Explain in terms of the equation, Fe (aq) + SCN (aq) + FeSCN- (aq), and LeChâtelier's Principle. (ps.) Observation after adding AgNO3: Turned milky white + thieverf less transparent Using the ions present in the solution, write a net ionic equation that would explain the precipitate observed Use the above...
In lab a student calculates the following equilibrium concentrations for Fe(aq)3++SCN(aq)−⇋FeSCN(aq)2+ at each of the sp...
In lab a student calculates the following equilibrium concentrations for Fe(aq)3++SCN(aq)−⇋FeSCN(aq)2+ at each of the specified temperatures. Calculate ΔH∘ in units of kJmol. Report your answer to two places after the decimal. Data Table Temp (C) K 5.4 221.2 22.4 185.9 64.3 134 77.3 125
are theses correct? please correct me if they are not. Results Fe Test Tube 2: FeSCN...
are
theses correct?
please correct me if they are not.
Results Fe Test Tube 2: FeSCN (aa) SCN () Fe Chemical equation: Explanation: The equilibrium shifted toward the increased the due to the addition of Fe(NO,)) because it of the Test Tube 3: FESCN 0) SCN () (as Chemical equation: Fe(ag) Explanation: Test Tube 4: Chemical equation: Fe(agk FeSCN( (aq)h Explanation: Test Tube 5: Chemical equation: Fe"( SCN () FESCN 3+ + (sq) Explanation: Test Tube 6 Chemical equation: Fe(a...
In lab a student calculates the following equilibrium concentrations for Fe(aq)3++SCN(aq)−⇋FeSCN(aq)2+ at each of the specified...
In lab a student calculates the following equilibrium concentrations for Fe(aq)3++SCN(aq)−⇋FeSCN(aq)2+ at each of the specified temperatures. Calculate ΔH∘ in units of kJmol. Report your answer to two places after the decimal. Data Table Temp (C) K -0.6 219.4 16.2 196.3 61.7 137.2 83.9 122.3 We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
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...
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),...
Introduction to Equilibrium Lab report Please help answering the question #2 (a,b,c,d) Thanks! ...
Introduction to Equilibrium Lab report
Please help answering the question #2 (a,b,c,d)
Thanks!
Question
Procedure
Notebook
Complex ion equilibrium 1. Formation of the complex ion: 38 a) What evidence was there that a new chemical substance had formed? b) How did the reaction change the initial iron and thiocyanate concentrations? Would the reacon av tken place ifthe proportions hadtbenhioneric raior? 2. Adding and removing reactants: a) What effecet did adding the reactants (Fe' or SCN-) have on he briumcmposition? evidence...
In this step, you add xSCN to oneof the our escoi y a. If your solution has Fe", s te portions fr...
second photo is for your reference. thanks!
In this step, you add xSCN to oneof the our escoi y a. If your solution has Fe", s te portions from Step 12A. ,what change should you expect to observe? b. Write a balanced chemical equation for the reaction between Fe" and KSCH. equation Step 13 In this step, you first add Naf to one of the four decantate portions NH&SCN in ethanol. from Step 12A; then, you add a. If your...
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...
FesCN (aq), and LeChâtelier's Explain in terms of the equation, Fe" (aq) + SCN (aq) Principle (4 ) Observation after adding KSCN: turned darker more red like original solution brown Explain in terms of the equation, Fe (aq) + SCN (aq) + FeSCN- (aq), and LeChâtelier's Principle. (ps.) Observation after adding AgNO3: Turned milky white + thieverf less transparent Using the ions present in the solution, write a net ionic equation that would explain the precipitate observed Use the above...
are
theses correct?
please correct me if they are not.
Results Fe Test Tube 2: FeSCN (aa) SCN () Fe Chemical equation: Explanation: The equilibrium shifted toward the increased the due to the addition of Fe(NO,)) because it of the Test Tube 3: FESCN 0) SCN () (as Chemical equation: Fe(ag) Explanation: Test Tube 4: Chemical equation: Fe(agk FeSCN( (aq)h Explanation: Test Tube 5: Chemical equation: Fe"( SCN () FESCN 3+ + (sq) Explanation: Test Tube 6 Chemical equation: Fe(a...
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...
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),...
Introduction to Equilibrium Lab report
Please help answering the question #2 (a,b,c,d)
Thanks!
Question
Procedure
Notebook
Complex ion equilibrium 1. Formation of the complex ion: 38 a) What evidence was there that a new chemical substance had formed? b) How did the reaction change the initial iron and thiocyanate concentrations? Would the reacon av tken place ifthe proportions hadtbenhioneric raior? 2. Adding and removing reactants: a) What effecet did adding the reactants (Fe' or SCN-) have on he briumcmposition? evidence...
second photo is for your reference. thanks!
In this step, you add xSCN to oneof the our escoi y a. If your solution has Fe", s te portions from Step 12A. ,what change should you expect to observe? b. Write a balanced chemical equation for the reaction between Fe" and KSCH. equation Step 13 In this step, you first add Naf to one of the four decantate portions NH&SCN in ethanol. from Step 12A; then, you add a. If your...
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