Refer to the following equilibrium to answer the questions that follow. Consider the reaction: FeCl3(aq)+ KSCN(aq)...
Refer to the following equilibrium to answer the questions
that follow.
Consider the reaction: FeCl3(aq)+ KSCN(aq) ↔
K3[Fe(SCN)6] + 3KCl(aq)
[Colors of the compds] yellow + colorless ↔
red + colorless
Refer to the equilibrium shown above. Adding ferric chloride will
__________.
| A. |
turn the color more red |
|
| B. |
turn the color more clear |
|
| C. |
turn the color less red |
|
| D. |
have no effect on the color |
Homework Answers
Since red is more intense than yellow, so we observe the solution as red. Now, the answer to the question comes from the Le Chatelier's principle. It says, when the equilibrium of a system is disturbed by applying temperature,pressure, excess reactant etc ,then the equilibrium will adjust and shift in such direction so that it can oppose the effect of given constraint. Here the system at first was in equilibrium. When we add excess FeCl3 in the medium, then the equilibrium shifts such that the system can consume excess FeCl3. So, the reaction goes forward, so that the system can consume excess FeCl3 by complexation with SCN-. Thus, more red complex will be generated, thus the colour will be more red. Correct answer is A.
Add Answer to:
Refer to the following equilibrium to answer the questions
that follow.
Consider the reaction: FeCl3(aq)+ KSCN(aq)...
Refer to the equilibrium below to answer the question. FeCl3 + 6 KSCN – K3[Fe(SCN)6] +...
Refer to the equilibrium below to answer the question. FeCl3 + 6 KSCN – K3[Fe(SCN)6] + 3 KCI yellow colorless red colorless Adding a couple of drops of an aqueous KCl solution will turn the solution less red. have no effect on the color turn the solution clear turn the solution red.
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),...
Name Part B. Iron un Chloride (FeCl) plus Potassium Thiocyanate (KSCN Prepare a stock solution to...
Name Part B. Iron un Chloride (FeCl) plus Potassium Thiocyanate (KSCN Prepare a stock solution to be tested by adding 12 drops each of 0.1 M FeCl, and 0.1 MKSON well. Fill each of four medium sized test tubes (all the same size) half full of the stock solution FeSCN'(a) pale yellow colorless 1. The first tube is a control. Always compare to this color. 2. Add 20 drops of 0.1 Miron () chloride solution to the second tube. Observe...
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...
G-10 Assume the equilibrium constant K 1 for a reaction A + B 2 C. You...
G-10 Assume the equilibrium constant K 1 for a reaction A + B 2 C. You prepare a solution that has the following initial concentrations. For each solution, calculate the reaction quotient Q and state if the concentrations of reactants and products will (increase, decrease, or stay the same). a) [A] 1 M, [B] 1M, [C] 2 M. b) [A] 2 M, [B] 1 M,(C] 1 M. Answers: Q 4 >K, [A, B] increase, [C] decreases Q=0.5 < K, [A,...
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) $...
Equilibrium Consider the following equilibrium: CH 3COOH(aq) + H 20(1) = CH 3COO "(aq) + H...
Equilibrium Consider the following equilibrium: CH 3COOH(aq) + H 20(1) = CH 3COO "(aq) + H 30 +(aq) What would be the effect of adding sodium acetate (CH 3COONa) a strong electrolyte to the reaction and what would happen to the pH of the solution? a. the equilbrium will shift to the right and the pH will decrease O b. the equilibrium will shift to the left and there will be no change in pH O c. the equilbrium will...
When Fe³⁺ and F⁻ are combined, the reaction Fe³⁺ +6F⁻ ⇄FeF₆³⁻ occurs. How does this reaction...
When Fe³⁺ and F⁻ are combined, the reaction Fe³⁺ +6F⁻
⇄FeF₆³⁻ occurs. How does this reaction affect the reaction Fe³⁺ +
SCN⁻ ⇄FeSCN²⁺ ? Justify your answer in terms of
observations(picture below). Think about LeChatelier's
principle
Equilibrium: LeChatelier's Principle and the Determination of an Equilibrium Constant Report Sheet Show a sample calculation on a separate piece of paper for all quantities marked with a "*". A. Le Chatelier's Principle: Fe3+ + SCN- What evidence is there of a chemical reaction?...
I need help with these questions. Part I.A 1. Why did the indicator initially turn blue...
I
need help with these questions.
Part I.A 1. Why did the indicator initially turn blue when NaOH was added to flask A? Consider equilibrium: Hin + H2O + H2O + In [1 mark] 2. When you left the flask A to stand for several minutes after the addition of NaOH, why did the contents of the flask A slowly change colour back from blue to yellow? Consider equilibriums: Hin + H2O + H30+ + In [2 marks] CO2(g) +...
PLEASE HELP ME! ASAP PLEASE!! If you need anymore information, please ask. This is what we...
PLEASE HELP ME! ASAP PLEASE!! If you need anymore information,
please ask. This is what we were given and I am having trouble!
1) Saturated Sodium Chloride Solution Equilibrium System: Observations upon addition ofHCI: white precipitate In which direction did this stress cause the equilibrium system to shif? Left or Right Which ion caused the shift? Explain. 2) Acidified Chromate Solution Equilibrium System: Observations upon addition ofHNO:: solution becomes orange Left or Right In which direction did this stress cause...
Refer to the equilibrium below to answer the question. FeCl3 + 6 KSCN – K3[Fe(SCN)6] + 3 KCI yellow colorless red colorless Adding a couple of drops of an aqueous KCl solution will turn the solution less red. have no effect on the color turn the solution clear turn the solution red.
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),...
Name Part B. Iron un Chloride (FeCl) plus Potassium Thiocyanate (KSCN Prepare a stock solution to be tested by adding 12 drops each of 0.1 M FeCl, and 0.1 MKSON well. Fill each of four medium sized test tubes (all the same size) half full of the stock solution FeSCN'(a) pale yellow colorless 1. The first tube is a control. Always compare to this color. 2. Add 20 drops of 0.1 Miron () chloride solution to the second tube. Observe...
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...
G-10 Assume the equilibrium constant K 1 for a reaction A + B 2 C. You prepare a solution that has the following initial concentrations. For each solution, calculate the reaction quotient Q and state if the concentrations of reactants and products will (increase, decrease, or stay the same). a) [A] 1 M, [B] 1M, [C] 2 M. b) [A] 2 M, [B] 1 M,(C] 1 M. Answers: Q 4 >K, [A, B] increase, [C] decreases Q=0.5 < K, [A,...
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) $...
Equilibrium Consider the following equilibrium: CH 3COOH(aq) + H 20(1) = CH 3COO "(aq) + H 30 +(aq) What would be the effect of adding sodium acetate (CH 3COONa) a strong electrolyte to the reaction and what would happen to the pH of the solution? a. the equilbrium will shift to the right and the pH will decrease O b. the equilibrium will shift to the left and there will be no change in pH O c. the equilbrium will...
When Fe³⁺ and F⁻ are combined, the reaction Fe³⁺ +6F⁻
⇄FeF₆³⁻ occurs. How does this reaction affect the reaction Fe³⁺ +
SCN⁻ ⇄FeSCN²⁺ ? Justify your answer in terms of
observations(picture below). Think about LeChatelier's
principle
Equilibrium: LeChatelier's Principle and the Determination of an Equilibrium Constant Report Sheet Show a sample calculation on a separate piece of paper for all quantities marked with a "*". A. Le Chatelier's Principle: Fe3+ + SCN- What evidence is there of a chemical reaction?...
I
need help with these questions.
Part I.A 1. Why did the indicator initially turn blue when NaOH was added to flask A? Consider equilibrium: Hin + H2O + H2O + In [1 mark] 2. When you left the flask A to stand for several minutes after the addition of NaOH, why did the contents of the flask A slowly change colour back from blue to yellow? Consider equilibriums: Hin + H2O + H30+ + In [2 marks] CO2(g) +...
PLEASE HELP ME! ASAP PLEASE!! If you need anymore information,
please ask. This is what we were given and I am having trouble!
1) Saturated Sodium Chloride Solution Equilibrium System: Observations upon addition ofHCI: white precipitate In which direction did this stress cause the equilibrium system to shif? Left or Right Which ion caused the shift? Explain. 2) Acidified Chromate Solution Equilibrium System: Observations upon addition ofHNO:: solution becomes orange Left or Right In which direction did this stress cause...
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