What are the concentrations at equilibrium of a 0.15 M solution of HCN? What will be...
What are the concentrations at equilibrium of a 0.15 M solution of HCN? What will be the concentration of Cu2+(aq) at equilibrium? HCN(aq)<=>H+(aq) + CN–(aq) , Kc= 4.9 x 10-10
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What are the concentrations at equilibrium of a 0.15 M solution
of HCN? What will be...
Problem 2: Find the concentrations of Ag, CN, and HCN in a saturated solution of AgCN...
Problem 2: Find the concentrations of Ag, CN, and HCN in a saturated solution of AgCN whose pH is somehow fixed at 9.00. Consider the following equilibria: Ksp = 2.2 x 10-16 AgCN(s) CN + H20 Ag+ + CN- HCN(aq) + OH- Kb = 1.6 x 10-5
Problem 2: Find the concentrations of Agt. CN. and HCN in a saturated solution of AgCN...
Problem 2: Find the concentrations of Agt. CN. and HCN in a saturated solution of AgCN whose pH is somehow fixed at 9.00. Consider the following equilibria: AgCN() ► Ag+ + CN- CN + H20 HCN(aq) + OH Ksp = 2.2 x 10-16 Kb = 1.6 x 105
Calculate the pH and equilibrium concentrations of a 0.46M salt solution of sodium cyanide NaCN in...
Calculate the pH and equilibrium concentrations of a 0.46M salt solution of sodium cyanide NaCN in water. Write the balanced chemical reaction(s) and show your work. Ka(HCN) = 4.0x10-10. For the concentrations, input only the numeric answer. What is the pH? What is the HCN concentration? What is the CN- concentration? What is the OH- concentration? What are the units of concentration?
What are the equilibrium concentrations? Equation sheetincluded. 2. (10 pts) For the reaction (aq) the equilibrium...
What are the equilibrium concentrations? Equation
sheetincluded.
2. (10 pts) For the reaction (aq) the equilibrium constant is Kc 3.0 x 10's at 25 oC. If the initial concentration of IHA is 0.100 M, what are the equilibrium concentrations of HA, H3o and A"?
For the reaction: N2 (g) + C2H2 (g) 2 HCN (g), Kc is 2.3x10-4 at 300 ºC. What are the equilibrium concentrations of al...
For the reaction: N2 (g) + C2H2 (g) 2 HCN (g), Kc is 2.3x10-4 at 300 ºC. What are the equilibrium concentrations of all species if the initial concentration of HCN was 5.0 M?
5) The molecular complex Cu(CN)42- dissociates in water by the process Cu(CN) + (aq) = Cu2+...
5) The molecular complex Cu(CN)42- dissociates in water by the process Cu(CN) + (aq) = Cu2+ (aq) + 4 CN- Kc = 9.5 x 10-17 The initial concentration of Cu(CN)4- in an aqueous solution is 0.0390 M. No Cu?" or CN ions are initially presen. What is the concentration of Cu2+ ion present when equilibrium is achieved? [12 points)
A titration is performed on a 25 mL sample of 0.15 M HCN (Ka = 4.9...
A titration is performed on a 25 mL sample of 0.15 M HCN (Ka = 4.9 x 10–10) with 0.30 M NaOH. Which of the following is the pH of the solution after 15 mL of NaOH is added?
Acid-Base Titration: A 0.15 M solution of NaOH is used to titrate 200.0 mL of 0.15...
Acid-Base Titration: A 0.15 M solution of NaOH is used to titrate 200.0 mL of 0.15 M HCN. What is the pH at the equivalence point? Ka = 4.9 x 10-10. Please include steps/work so I can see and understand how this problem is solved.
14. What are the final concentrations of A and A, at equilibrium if the initial (A)...
14. What are the final concentrations of A and A, at equilibrium if the initial (A) concentration is 0.60M? K-4.2 x 10* As (g) 2A(8) Initial: 0.60 Equilibrium: 15. Find final equilibrium concentrations for HA, H', and A: HA(aq) + H20 (1) HO" (aq) + A' (aq) Initial Concentrations 0.60 M OM ом K.-2.0 x 10 **Remember to review Properties of liquids (solubility, intermolecular forces, colligative properties, concentration units), phase diagrams, phase changes and the energy associated with heating and...
Introduction to Qualitative Analysis Post-Lab Questions: (show logic for full credit) 1. Write the equilibrium-constant expression...
Introduction to Qualitative Analysis Post-Lab Questions: (show logic for full credit) 1. Write the equilibrium-constant expression for each of the following reactions. Remember how to handle the concentrations of solids or water. a. N_(g) + 3H2(g) + 2NH,(g) b. HCN(aq) H(aq) + CN (aq) c. PbCl(s) Pb2"(aq) + 2Cl(aq) d. NH3(aq) + H2O(l) = NH,'(aq) + OH (aq) e. HF(aq) = H'(aq) + F(aq) 2. 2. What is the pH of a solution if [H'] = 2.0 x 10 M?...
Problem 2: Find the concentrations of Ag, CN, and HCN in a saturated solution of AgCN whose pH is somehow fixed at 9.00. Consider the following equilibria: Ksp = 2.2 x 10-16 AgCN(s) CN + H20 Ag+ + CN- HCN(aq) + OH- Kb = 1.6 x 10-5
Problem 2: Find the concentrations of Agt. CN. and HCN in a saturated solution of AgCN whose pH is somehow fixed at 9.00. Consider the following equilibria: AgCN() ► Ag+ + CN- CN + H20 HCN(aq) + OH Ksp = 2.2 x 10-16 Kb = 1.6 x 105
What are the equilibrium concentrations? Equation
sheetincluded.
2. (10 pts) For the reaction (aq) the equilibrium constant is Kc 3.0 x 10's at 25 oC. If the initial concentration of IHA is 0.100 M, what are the equilibrium concentrations of HA, H3o and A"?
5) The molecular complex Cu(CN)42- dissociates in water by the process Cu(CN) + (aq) = Cu2+ (aq) + 4 CN- Kc = 9.5 x 10-17 The initial concentration of Cu(CN)4- in an aqueous solution is 0.0390 M. No Cu?" or CN ions are initially presen. What is the concentration of Cu2+ ion present when equilibrium is achieved? [12 points)
14. What are the final concentrations of A and A, at equilibrium if the initial (A) concentration is 0.60M? K-4.2 x 10* As (g) 2A(8) Initial: 0.60 Equilibrium: 15. Find final equilibrium concentrations for HA, H', and A: HA(aq) + H20 (1) HO" (aq) + A' (aq) Initial Concentrations 0.60 M OM ом K.-2.0 x 10 **Remember to review Properties of liquids (solubility, intermolecular forces, colligative properties, concentration units), phase diagrams, phase changes and the energy associated with heating and...
Introduction to Qualitative Analysis Post-Lab Questions: (show logic for full credit) 1. Write the equilibrium-constant expression for each of the following reactions. Remember how to handle the concentrations of solids or water. a. N_(g) + 3H2(g) + 2NH,(g) b. HCN(aq) H(aq) + CN (aq) c. PbCl(s) Pb2"(aq) + 2Cl(aq) d. NH3(aq) + H2O(l) = NH,'(aq) + OH (aq) e. HF(aq) = H'(aq) + F(aq) 2. 2. What is the pH of a solution if [H'] = 2.0 x 10 M?...
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