State which of the following statements are true: a) When two metals, e.g. Zn and Cd, are connected and placed in a solu

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State which of the following statements are true: a) When two
metals, e.g. Zn and Cd, are connected and placed in a solution
containing both metal ions, the metal with the lower standard
potential would corrode. b) Conversely, the metal with the higher
potential would be deposited. c) The cell and cell reaction are
written in opposite orders, for instance, for the cell
Fe/Fe2+(aq)/Cu2+(aq)/Cu, the reaction is Fe2+ +Cu→Cu2+ +Fe d) The
cell potential is obtained by subtracting the electrode potential
of the right-hand electrode from the left-hand electrode.