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2. Chromate-Dichromate Equilibrium eilas a. KaCrO4 color b. K2Cr04+ H2SO4 color an Orange c. Mixture (b)...
Another interesting equilibrium system is that between the polyatomic ions chromate, CrO42-, and dichromate, Cr2O72-. In...
Another interesting equilibrium system is that between the polyatomic ions chromate, CrO42-, and dichromate, Cr2O72-. In an acidic environment (high H3O+), the chromate will react to form dichromate ion. Barium will react with chromate, but NOT dichromate, to form an insoluble precipitate. 2 CrO42- (aq, yellow) + 2 H3O+ (aq) <---> Cr2O72- (aq, orange) + 2 H2O (l) Describe and explain how the chemical equilibrium will shift and what changes you would observe under the following scenarios: a) Addition of...
Another interesting equilibrium system is that between the polyatomic ions chromate, CrO42-, and dichromate, Cr2O72-. In...
Another interesting equilibrium system is that between the polyatomic ions chromate, CrO42-, and dichromate, Cr2O72-. In an acidic environment (high H3O+), the chromate will react to form dichromate ion. Barium will react with chromate, but NOT dichromate, to form an insoluble precipitate. 2 CrO42- (aq, yellow) + 2 H3O+ (aq) <---> Cr2O72- (aq, orange) + 2 H2O (l) Describe and explain how the chemical equilibrium will shift and what changes you would observe under the following scenarios: a) Addition of...
Please explain in words and in equation. (5 pts) Chromium (VI) forms two different oxyanions, the orange dichromate...
Please explain in words and in equation.
(5 pts) Chromium (VI) forms two different oxyanions, the orange dichromate ion, Cr207, and the yellow chromate ion, CrO42- The equilibrium reaction between the two ions is Cr2O72- +H20 (1) orange 2 CrO42- + 2 H+ (aq) yellow At equilibrium the solution starts out looking amber a color between orange and yellow. Explain what would happen to the solution of sodium hydroxide is added. 2-
I need help with these questions, I just dont get it Consider the equilibrium between chromate...
I need help with these questions, I just dont get it Consider the equilibrium between chromate (CrO42-) and dichromate (Cr2O72-) in aqueous acid. 2CrO4^2-(aq) + 2H^+(aq) ⇌ Cr2O7^2-(aq) + H2O(l) Answer the following questions about the above equilibrium. 1.To an orange colored equilibrium mixture, concentrated sulfuric acid is added. What do you expect to observe for the color of the reaction mixture? Explain your answer and give reasons. 2. To an orange colored equilibrium mixture, a few drops of ammonia...
pes) Explain Le Chatelier's Principle The reaction to produce dichromate ion (orange) from chromate ion (yellow)...
pes) Explain Le Chatelier's Principle The reaction to produce dichromate ion (orange) from chromate ion (yellow) is represented by the following equation: 2C704 + 2H.Org Cr2O ) + 3H2O Where would the equilibrium shift and what would you observe if you add HCl(aq) to the test tube? (2pts.) 6. Indicate for each of the following substances whether they are acidic, basic or neutral in aqueous solution. (4pts.) a. Vinegar b. Baking Soda c. Lemon Juice d. Ammonia 7. What is...
The reaction to produce dichromate ion (orange) from chromate ion (yellow) is represented by the following...
The reaction to produce dichromate ion (orange) from chromate ion (yellow) is represented by the following equation: 2CrO4^2- (aq) + 2H_3O^+(aq) Cr_2O^2-_7(aq) + 3H_2O_(l) Where would the equilibrium shift and what would you observe if you add HCl (aq) to the test tube?
1. Chromate-Dichromate Equation: 2G002 +2H* = Cr2O +H30 Observations Explanation (LeChatelier's Principle) (1)H2SO4 (aq) yellow-alonge addition...
1. Chromate-Dichromate Equation: 2G002 +2H* = Cr2O +H30 Observations Explanation (LeChatelier's Principle) (1)H2SO4 (aq) yellow-alonge addition color formed (2)NaOH (aq) addition still yellow and ofter 20 min lit is clear
The equilibrium of Co and CF with CoCl- 5 Initial Color: blue Color after addition of...
The equilibrium of Co and CF with CoCl- 5 Initial Color: blue Color after addition of HCI: Piuk bue/Paxle Color after addition of HCI: Color after heating: Pak Color after cooling: Questions Chatelier's Principle to explain the different colors found in the following equilibria. Write balance chemical equations for all chemical reactions. Write net ionic equations for the reaction between Fe(NO3)2(aq) and KSCN(aq) a Explain the color change when Fe(NO3)2 is added to the reaction at equilibrium. b Write net...
Chromate is acidified to dichromate as shown in the following chemical reaction. 2 Cro4^2- + 2...
Chromate is acidified to dichromate as shown in the following chemical reaction. 2 Cro4^2- + 2 H^+ -> <- Cr2O7 ^-2 + H2O Would you add HCL or NaOH to shift the reaction to the right? Which of the following would you add to shift the reaction in reverse: K2CrP4, HCL or NaOH? Explain your choice.
• When solutions of silver nitrate and sodium chromate are mixed, solid silver chromate forms (Ag_CrOx)...
• When solutions of silver nitrate and sodium chromate are mixed, solid silver chromate forms (Ag_CrOx) forms. Write the molecular, total ionic, and net ionic equations for this reaction. • Determine the oxidation number (O.N.) of each element in these species a)zinc chloride b)sulfur trioxide c) nitric acid d)dichromate ion • What are some differences between redox reactions and acid-base reactions? How do the products differ? • What was the most confusing topic covered in class this week?
Please explain in words and in equation.
(5 pts) Chromium (VI) forms two different oxyanions, the orange dichromate ion, Cr207, and the yellow chromate ion, CrO42- The equilibrium reaction between the two ions is Cr2O72- +H20 (1) orange 2 CrO42- + 2 H+ (aq) yellow At equilibrium the solution starts out looking amber a color between orange and yellow. Explain what would happen to the solution of sodium hydroxide is added. 2-
pes) Explain Le Chatelier's Principle The reaction to produce dichromate ion (orange) from chromate ion (yellow) is represented by the following equation: 2C704 + 2H.Org Cr2O ) + 3H2O Where would the equilibrium shift and what would you observe if you add HCl(aq) to the test tube? (2pts.) 6. Indicate for each of the following substances whether they are acidic, basic or neutral in aqueous solution. (4pts.) a. Vinegar b. Baking Soda c. Lemon Juice d. Ammonia 7. What is...
The reaction to produce dichromate ion (orange) from chromate ion (yellow) is represented by the following equation: 2CrO4^2- (aq) + 2H_3O^+(aq) Cr_2O^2-_7(aq) + 3H_2O_(l) Where would the equilibrium shift and what would you observe if you add HCl (aq) to the test tube?
1. Chromate-Dichromate Equation: 2G002 +2H* = Cr2O +H30 Observations Explanation (LeChatelier's Principle) (1)H2SO4 (aq) yellow-alonge addition color formed (2)NaOH (aq) addition still yellow and ofter 20 min lit is clear
The equilibrium of Co and CF with CoCl- 5 Initial Color: blue Color after addition of HCI: Piuk bue/Paxle Color after addition of HCI: Color after heating: Pak Color after cooling: Questions Chatelier's Principle to explain the different colors found in the following equilibria. Write balance chemical equations for all chemical reactions. Write net ionic equations for the reaction between Fe(NO3)2(aq) and KSCN(aq) a Explain the color change when Fe(NO3)2 is added to the reaction at equilibrium. b Write net...
• When solutions of silver nitrate and sodium chromate are mixed, solid silver chromate forms (Ag_CrOx) forms. Write the molecular, total ionic, and net ionic equations for this reaction. • Determine the oxidation number (O.N.) of each element in these species a)zinc chloride b)sulfur trioxide c) nitric acid d)dichromate ion • What are some differences between redox reactions and acid-base reactions? How do the products differ? • What was the most confusing topic covered in class this week?
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