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If an aqueous solution of HN03 is electrolyzed for 30.00 min at a steady current of...
If an aqueous solution of HNO3 is electrolyzed for 15.00 min at a steady current of 1.39 A, what volume of H2 (g) at 25.0°C and 1.05 atm will be collected at the cathode? vol H2 (L) = 18.8 The reaction is: 2 H+ (aq) + 2e → H2 (g) Submit Answer Incorrect. Tries 4/45 Previous Tries
rochem IV » Electrochem IV- Problem 3 TimerNotesEvaluate Feedback solution of HNO, is electrolyzed for 19.00 min at a steady current of 1.43 A, what volume of H2 (9) at 25.0°C and 0.99 atm will be collected at the cathode? ol H2 (L) Submit Answer Tries 0/45 Send Post Discussion
Be sure to answer all parts. When an aqueous solution containing gold (III) salt is electrolyzed, metallic gold is deposited at the cathode, and oxygen gas is generated at the anode. (a) If 7.49 g of Au is deposited at the cathode, calculate the volume of O2 generated at 23°C and 740 mmHg. L (b) What is the current used if the electrolytic process took 6.90 h? A
5- An aqueous Ti(NO3)3 solution was electrolyzed for 45 min to deposit 6.18 grams of Titanium. What is the constant current (in Amps) used in this electrolysis? (molar mass of Ti = 47.87 g/mol, Faraday Cte = 96,485 C/mole e")
An aqueous Snl, solution is electrolyzed under 1 bar pressure using platinum electrodes. (a) Write the half-reactions predicted to occur at the anode and cathode, based on the standard cell potentials given below. Standard Reduction Potentials (Volts) at 25°C 12(s) +2 — 21'(aq) 0.535 O2(g) + 4 H30* (aq) + 4 —6H20(1) 1.229 2 H20(1) + 2 € H2(g) + 2 OH'(aq) -0.828 Sn²+(aq) +2 € + Sn(s) -0.140 Half-reaction at anode: Half-reaction at cathode: (b) What is the expected...
Be sure to answer all parts. When an aqueous solution containing gold (III) salt is electrolyzed, metallic gold is deposited at the cathode, and oxygen gas is generated at the anode. (a) If 6.05 g of Au is deposited at the cathode, calculate the volume of 02 generated at 23°C and 752 mmHg. (b) What is the current used if the electrolytic process took 4.30 h?
What mass of beryllium metal is produced when molten BeF2 is electrolyzed by a current of 7.75 A for 15.8 h? Submit Answer Tries 0/45
Question 30 1 pts When an aqueous solution of sodium sulfate is electrolyzed, what are the expected products? Reduction Half-Reaction E° (V) Na" (aq) + = Na(s) -2.71 2H2O(l) + 2 H2(g) + 2OH(aq) -0.83 2H(aq) + 2 H2(g) 0.00 O2(g) + 4H(aq) + 40 = 2H 0(1) 1.23 S20,? (aq) + 20 = 250/?"(ag) 2.01 Na(s) and H2(g) Hz8), OH (aq), O2(g), and Haq) O2(g), H(aq), and Na(s) Hz(8), OH (ag), and Na(s) Hytg), OH (aq), and S,0, (ay)
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QUESTION 15 When an aqueous solution of KBr is electrolyzed, what forms at the electrodes? A. Cathode: Br2 anode: H2 B. Cathode: Br2: anode: K C. Cathode: H2; anode: O2 D. Cathode: H2; anode: Br2 E. Cathode: K: anode: Br2 QUESTION 13 Consider a voltaic cell based on the half-cells: Ag+(aq) + e - Ag(s) E° - +0.80 V *(aq) + 2 e - Co(s) Eº = -0.28 V Identify the anode and give...
A solution of CdSO4 was electrolyzed using Pt electrodes (inert electrode). Given the following electrode potential information, determine which one statement concerning the products of electrolysis is correct. Give your reasoning. 2 H2O(l) + 2 e- D 2 OH‑(aq) + H2(g) Eored = -0.83V Cd2+(aq) + 2 e- D Cd(s), Eored = -0.40V O2(g) + 4 H+(aq) + 4 e- D 2 H2O(l) Eored = +1.23V S2O82-(aq) + 2 e- D 2 SO42-(aq) Eored = +2.01V a) Water is oxidized...