When comparing the electrode potential values for the following equations, which reaction more likely undergoes oxidation and which more likely undergoes reduction? Based upon the electrode potentials which electrode is the anode and which is the cathode?

An electrochemical change occurs when a strip of nickel is immersed in an acidified solution that contains dichromate ions. The colour change that occurs as the reaction above proceeds is: Select one: Green to colourless Orange to green Colourless to green Green to orange Which of the following metals could have been used instead of nickel in order to maintain the original colour of the solution described above? Select one: O Gold Magnesium O Copper Cadmium Which of the following entities will react spontaneously with Cd(s) but not with Ni(s)? Select one: Sn²+ (aq) Cr²+ (aq) Coz+(aq) H₂Se(aq)

Element A has a standard reduction potential of +0.74V, whereas Element B has a standard reduction potential of -1.15V. Which of the following statements is correct with respect to building a Galvanic cell with these two elements? A. A will be the cathode, B will be the anode, and the cell potential will be positive. B. A will be the cathode, B will be the anode, and the cell potential will be negative. C. A will be the anode, B will be the cathode, and the cell potential will be positive. D. A will be the anode, B will be the cathode, and the cell potential will be negative. E. The anode, cathode, and cell potential must all be experimentally determined.

A galvanic (voltaic) cell contains a copper cathode immersed in a copper(I) chloride solution and a nickel anode immersed in a nickel(II) chloride solution. The two solutions are connected with a salt bridge. Write the balanced equation for the galvanic cell. Phases are optional. balanced equation: A current of 2.40 A is observed flowing through the cell for a period of 2.81 h. Calculate the amount of charge flowing through the circuit during this time. C Calculate the number of moles of electrons flowing through the circuit during this time. moles of clectrons: Calculate the mass change in grams of the copper and nickel electrodes. mass change of copper clectrodc: mass change of nickel electrode: