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- When jump-starting a car with a dead battery, the ground jumper should be attached to a remote part of the engine block. Why?3. Solving time of electrolytic process. How long will it take for 1.25 L of a 1.0 M CuSO4 solution being electrolyzed with a current of 3.40 A to reach a concentration of 0.25 M?8:51 AM Mon Dec 5 = S BIOL 286 E B Lecture Pow... Bb Lecture Pow... O ELECTROCHEMISTRY Recognizing consistency among equilibrium constant, free... cell A B A student made measurements on some electrochemical cells and calculated three quantities: • The standard reaction free energy AG. The equilibrium constant K at 25.0 °C. • The cell potential under standard conditions º His results are listed below. Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row, if any. C Note: If there is a mistake in a row, only one of the three quantities listed is wrong. Also, you may assume the number of significant digits in each quantity is correct. Also note: for each cell, the number n of electrons transferred per redox reaction is 1. n 1 AA 1 1 Explanation 142. kJ/mol O calculated quantities (Check the box next to any that are wrong.) AG - 50. kJ/mol O - 46. kJ/mol O Check www-awu.aleks.com K 24 7.54 x 10 O…
- A potential of - 0.788 V is applied to a cell with Nernst Potential of -0.734 V. The internalresistance of the cell is 18 Ohms, and the current of 1.78 mA is passed through it. Calculatethe Overpotential, due to the electrodes, for this cell.a. Zerob. Overpotential cannot be determinedc. 0.032 Vd. 0.022 Ve. 0.054(d) onlyElectrochemistry Data and Results Sheet -Sp22_ML Saved - Christian Charlton Draw Design Layout References Mailings Review View Help P Comments Insert A A Aav A =E-E EE AaBbCcL AaBbC AaBbCel es New Roma v 12 Editing Dictate Editor Emphasis Heading 1 Reu File I Uv ab x, x' A 2. A. 1 Normal 41 。田、刻T Font Paragraph Styles Voice Editor Reuse Electrochemistry Data and Results Sheet v031622 To complete this lab, follow the instructions in the VIRTUAL Lab Activity folder on Blackboard. All chemical reactions must be balanced, have correct formatting, and include states of matter. Experiment L. Measuring standard reduction potentials for a voltaic cell During lab you will conduct a virtual experiment setting up two different voltaic cells using an online tool. L.1 Measured potentials relative to Ag*|Ag Reduction Half Reaction Ag*(aq)|Ag(s) 1.2 Corrected potentials relative to SHE Reduction Half Reaction E(V) E(V) Ag*(aq)|Ag(s) 0.80 Cu2 (aq)|Cu(s) Zn (aq)|Zn(s) -0.402 Cu²*(aq)|Cu(s) -1.504 Zn2…
- For all of the following experiments, under standard conditions, which species could be spontaneously produced? (a) A lead wire is placed in a solution containing Cu2+ No reaction. YES or NO Cu. YES or NO PbO2. YES or NO (b) Crystals of I2 are added to a solution of NaCl. No reaction. YES or NO I^-. YES or NO Na. YES or NO (c) Cl2 gas is bubbled into a solution of NaI. Cl^-. YES or NO No reaction. YES or NO Na. YES or NOELECTROCHEMISTRY: Calculate the required voltage (V) if an unknown metal (M) was electrodeposited from an aqueous solution containing M2X1 (where X is the anion) with a supplied current of 5.05 A for 12 h, consuming 0.1734 kWh of electrical energy. Assume that the current efficiency is 88%. (Input values oniy with 2 decimal places. Do not include the unit.)• Assume a dipole consisting of two different charges with different potentials, one +4V and the other -8V. They are a distance of 20 units of length from each other. First cal- culate the potential at each point and then construct one graph showing the potential as a function of distance between the charges. Show on the same graph the potential for each charge separately as well as for the combined (total) potential. DO NOT COPY Figures from the internet or other students.
- The number of Faraday of charge needed to deposit 1.99 x 10-4 moles of Ni+2 ion from its solution is ……………………… a. 39.8 x 10-4 b. 3.98 x 10-3 c. 3.98 x 10-4 d. 3.98 x 10-2Use the References to access important values II needed for this qu 2-ele2 Consider the following cell reaction: Ni(s) +2 H*(? M)- →Ni?*(1.00 M) + H,(g)(1.00 atm) If the cell potential at 298 K is 0.118 volts, what is the pH of the hydrogen electrode? pH =0.2 not in A 0.0 s dliw boouborq ei (sosiq lemisob eno of g ni) blog to 226m erit ei feriW 8 much current (in A to one decimal place) is needed to produce 100.0 g of gold in 3.00 3+ Au³+ (aq) + 3e¯¯ →→ Au(s) 10. How Ihr? A: 13.6