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Question 29 3 pts Which of the following statement(s) is (are) true when the cell operates...
Consider the following electrochemical cell operating at 25°C (Pt is an inert electrode): Pl(a) Cu() 1...
Consider the following electrochemical cell operating at 25°C (Pt is an inert electrode): Pl(a) Cu() 1 M HNO.(4) 1 M NO, (4) 1 M H() 1 M Cu(aq) Which of the following statement(s) is (are) true when the cell operates spontaneously? (That is, when e are allowed to flow whichever way they want" to) 1. The measured voltage would be 0.603 V 2. The Pt electrode would be the anode 3. The measured voltage would be 1.277 V 4. Electrons...
Question 1 1 pts For the cell: Zn(s) + 2H+ (aq) + Zn2+(aq) + H2 (g)...
Question 1 1 pts For the cell: Zn(s) + 2H+ (aq) + Zn2+(aq) + H2 (g) If [Zn2+) = 1 M, PH2 = 1 atm, and E = 0.549 V what is pH? Question 2 1 pts Calculate the voltage for the following cell at 25° ZnZn+2 ( 2.832 M) || Cd2+ (0.027 M)| Cd
Question 3 15 pts What is the correct cell voltage for the following electrochemical cell reaction?...
Question 3 15 pts What is the correct cell voltage for the following electrochemical cell reaction? -> Cr3+ (aq) Cr(s) + Agfaq) + A9(8) E°Cr3+/cr = (-) 0.74V , EºAg+/Ag = (+) 0.80 V (-) 0.06 V (+) 0.06 V (+) 1.54 V O(-) 1.54V
Question 4 1 3 Mn2+ (aq) + 2Al(s) + 3 Mn(s) + 2 A13+ (aq) For...
Question 4 1 3 Mn2+ (aq) + 2Al(s) + 3 Mn(s) + 2 A13+ (aq) For the balanced equation above, calculate Ecell if [Mn2+1= .05 M and [A13+) = 4 x 10-4M. A.-0.027 V B. +1.42 V C. +0.192 V D. +0.508 V E. -0.541 V. ОА OB Ос OD OE Question 5 1 pts How many grams of tin will plate out from an Sn2+ (aq) solution in an electrolytic cell when 4.13 mol e pass through the circuit?...
Question 3 1 pts You're provided with a bottle labled [CoCl26H20] = 0.045 Min 4.60 M HCI. You heat a small volume o...
Question 3 1 pts You're provided with a bottle labled [CoCl26H20] = 0.045 Min 4.60 M HCI. You heat a small volume of the solution in a hot water bath to 50°C. If you determine that (CoCl2-1 -0.046 M at 50 °C at equilibrium, what must be the equilibrium concentration of [CI] at 50 °C? Express your response in units of M to three digits after the decimal. Question 4 1 pts If you find that (CoCl2(aq)] -0.306 M, [Co(H20)62+(aq)]...
3. Consider the following electrochemical cell. Standard reduction potentials are given on the next page. Tl(s)...
3. Consider the following electrochemical cell. Standard reduction potentials are given on the next page. Tl(s) | Tl+(aq, 0.50 mol L−1) || H+(aq, x mol L−1) | H2(g, 1 atm) | Pt(s) The concentration of H+ is unknown and the pressure of H2 is kept constant at 1 atm. The cell voltage is initially measured as 0.139 V, with the Pt | H2 | H+ half-cell acting as the cathode. (a) (6 marks) Write out the oxidation and reduction half...
12:45 Exit Question 3 10 pts The velocity of a particle is given by the equation...
12:45 Exit Question 3 10 pts The velocity of a particle is given by the equation V = 5t2 + 3t where Vis measured in m/min. Find the acceleration of the particle att = 9 min. Round your answer to the nearest whole number. Question 4 10 pts Evaluate the following integral using the Trapezoid Rule with n = 4 where a = 8. Vx + a dx Round your answer to 1 decimal place. 12:44 Exit Question 1 10...
please help as soon as possible ergent Question 24 (1 point) A substance (A) reacts to...
please help as soon as possible ergent
Question 24 (1 point) A substance (A) reacts to form another substance (B): 3 A(9) 2 B(9) The reaction is run at a particular temperature with the concentrations of A and B monitored over time and plotted in the graph. At what time was equilibrium first reached and what is the approximate value of the equilibrium constant? 2.0 16 [B] LO concentration/M 10 IA] 04 00 • 30 20 x 50 60 90...
Question 3 1 pts Consider the following chemical reaction H2SO4(aq) + H2011 - HSO4 (aq) +...
Question 3 1 pts Consider the following chemical reaction H2SO4(aq) + H2011 - HSO4 (aq) + H30* (aq) which answer choice correctly labels acid, base, conjugate acid and conjugate base? H2O*(aq) Answer H2SOdlad) H200 HSO, lad) Choice acid base conjugate base base acid conjugate base acid base conjugate acid base acid conjugate acid conjugate acid conjugate acid conjugate base conjugate base Question 7 1 pts Calculate the pH of a solution that was prepared with 1.46 g of HCl to...
Suppose a chemist starts with an aqueous buffer that contains 0.05 mol of HCN and 0.07...
Suppose a chemist starts with an aqueous buffer that contains 0.05 mol of HCN and 0.07 mol of NaCN in a total volume of 1.00 L. What is the pH after 0.03 mol of OH is added to the buffer? a. 2.01 b. 9.46 c. 10.92 d. 10.01 e. 8.61 Calculate Eºcell for the following balanced redox reaction in acidic solution: 35024+ 2Cr(s) + 12 H+ + 3 SO2 (g) + 2Cr+3 + 6 H2O (acidic) a. +1.945 V b....
Consider the following electrochemical cell operating at 25°C (Pt is an inert electrode): Pl(a) Cu() 1 M HNO.(4) 1 M NO, (4) 1 M H() 1 M Cu(aq) Which of the following statement(s) is (are) true when the cell operates spontaneously? (That is, when e are allowed to flow whichever way they want" to) 1. The measured voltage would be 0.603 V 2. The Pt electrode would be the anode 3. The measured voltage would be 1.277 V 4. Electrons...
Question 1 1 pts For the cell: Zn(s) + 2H+ (aq) + Zn2+(aq) + H2 (g) If [Zn2+) = 1 M, PH2 = 1 atm, and E = 0.549 V what is pH? Question 2 1 pts Calculate the voltage for the following cell at 25° ZnZn+2 ( 2.832 M) || Cd2+ (0.027 M)| Cd
Question 3 15 pts What is the correct cell voltage for the following electrochemical cell reaction? -> Cr3+ (aq) Cr(s) + Agfaq) + A9(8) E°Cr3+/cr = (-) 0.74V , EºAg+/Ag = (+) 0.80 V (-) 0.06 V (+) 0.06 V (+) 1.54 V O(-) 1.54V
Question 4 1 3 Mn2+ (aq) + 2Al(s) + 3 Mn(s) + 2 A13+ (aq) For the balanced equation above, calculate Ecell if [Mn2+1= .05 M and [A13+) = 4 x 10-4M. A.-0.027 V B. +1.42 V C. +0.192 V D. +0.508 V E. -0.541 V. ОА OB Ос OD OE Question 5 1 pts How many grams of tin will plate out from an Sn2+ (aq) solution in an electrolytic cell when 4.13 mol e pass through the circuit?...
Question 3 1 pts You're provided with a bottle labled [CoCl26H20] = 0.045 Min 4.60 M HCI. You heat a small volume of the solution in a hot water bath to 50°C. If you determine that (CoCl2-1 -0.046 M at 50 °C at equilibrium, what must be the equilibrium concentration of [CI] at 50 °C? Express your response in units of M to three digits after the decimal. Question 4 1 pts If you find that (CoCl2(aq)] -0.306 M, [Co(H20)62+(aq)]...
12:45 Exit Question 3 10 pts The velocity of a particle is given by the equation V = 5t2 + 3t where Vis measured in m/min. Find the acceleration of the particle att = 9 min. Round your answer to the nearest whole number. Question 4 10 pts Evaluate the following integral using the Trapezoid Rule with n = 4 where a = 8. Vx + a dx Round your answer to 1 decimal place. 12:44 Exit Question 1 10...
please help as soon as possible ergent
Question 24 (1 point) A substance (A) reacts to form another substance (B): 3 A(9) 2 B(9) The reaction is run at a particular temperature with the concentrations of A and B monitored over time and plotted in the graph. At what time was equilibrium first reached and what is the approximate value of the equilibrium constant? 2.0 16 [B] LO concentration/M 10 IA] 04 00 • 30 20 x 50 60 90...
Question 3 1 pts Consider the following chemical reaction H2SO4(aq) + H2011 - HSO4 (aq) + H30* (aq) which answer choice correctly labels acid, base, conjugate acid and conjugate base? H2O*(aq) Answer H2SOdlad) H200 HSO, lad) Choice acid base conjugate base base acid conjugate base acid base conjugate acid base acid conjugate acid conjugate acid conjugate acid conjugate base conjugate base Question 7 1 pts Calculate the pH of a solution that was prepared with 1.46 g of HCl to...
Suppose a chemist starts with an aqueous buffer that contains 0.05 mol of HCN and 0.07 mol of NaCN in a total volume of 1.00 L. What is the pH after 0.03 mol of OH is added to the buffer? a. 2.01 b. 9.46 c. 10.92 d. 10.01 e. 8.61 Calculate Eºcell for the following balanced redox reaction in acidic solution: 35024+ 2Cr(s) + 12 H+ + 3 SO2 (g) + 2Cr+3 + 6 H2O (acidic) a. +1.945 V b....
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