2. An electrochemical cell consists of standard hydrogen electrode and copper metal electrode. If the copper electrode is placed in solution of 0.10 M NaOH that is saturated with Cu(OH)2, what is the cell potential at 25 degrees C. For Cu(OH)2, Ksp=1.6 x 10-19. E value for copper 2+ ion into solid copper is +0.34.

A0.10 m aqueous solution of sodium sulfate is a better conductor of electricity than a 0.10 m aqueous solution of sodium chloride. which of the following best explains this observation? (a) sodium sulfate is more soluble in water than sodium chloride. (b) sodium sulfate has a higher molar mass than sodium chloride. (c) to prepare a given volume of 0.10 m solution, the mass of sodium sulfate needed is more than twice the mass of sodium chloride needed. (d) more moles of ions are present in a given volume of 0.10 m sodium sulfate than in the same volume of 0.10 m sodium chloride. (e) the degree of dissociation of sodium sulfate in solution is significantly greater than that of sodium chloride.