SOLVED

11) In the electrolysis of water, oxygen is evolved at the cathode. 12) Choose the INCORRECT statement. A) Electrons are transferred in oxidation-reduction reactions. B) A strip of metal in a solution of ions of that metal is an electrode potential. C) Reduction is the gain of electrons. D) Oxidation is the loss if electrons. E) A salt bridge maintains electrical contact between two half cells. 13) Choose the INCORRECT statement. A) An electrode is often a strip of metal. B) An electrode in a solution of its ions is a half cell. C) An electrochemical cell is a half cell. D) The electromotive force (emf) is the cell potential. E) The cell potential is the potential difference between the half cells. 14) Choose the INCORRECT statement. A) A cell diagram is a symbolic way to show cell components. B) An anode is where oxidation occurs. C) A cathode is where reduction occurs. D) Half cells in a cell diagram are separated by a single vertical line. E) The anode is on the left in a cell diagram. 15) In a galvanic cell, oxidation occurs at the: A) anode B) cathode C) salt bridge D) electrolyte E) in cathodic space 16) Choose the INCORRECT statement. A) A double vertical line separates half cells in a cell diagram. B) A single vertical line separates phases in a cell diagram. C) A voltaic cell is a galvanic cell. D) Voltaic cells produce an electron flow. E) Electrolytic cells are cells where electron flow is caused by spontaneous reactions. 17) In a zinc-lead cell the reaction is: Pb2+ + Zn → Pb + Zn2+    E° = 0.637 V Which of the following statements about this cell is FALSE? A) The zinc electrode is the cathode. B) The reaction will go in the direction indicated. C) The shorthand notation is Zn ? Zn2+ ? Pb2+ ? Pb D) The actual cell voltage is less than +0.637 volts because of concentration polarization and possible other factors. E) The lead electrode is positively charged. 18) Choose the correct statement based on the following oxidation potentials. Mg/Mg2++2.37 vFe/Fe2++0.44 vCu/Cu2+-0.34 v Zn/Zn2++0.76 vSn/Sn2++0.14 vAg/Ag+-0.80 v A) Mg will not displace Zn2+ from solution B) Cu will displace Sn2+ from solution C) Fe will displace Zn2+ from solution D) Fe will displace H+ from solution E) Sn will displace Fe2+ from solution 19) Choose the INCORRECT statement. A) SHE stands for Standard Helium Electrodes. B) E° is the standard electrode potential. C) The standard electrode potential is the reduction potential of a half cell. D) The standard cell potential is the potential difference between two half cells. E) E°cell is the standard cell potential. 20) Choose the INCORRECT statement. A) When a half reaction is reversed, the sign of the potential is changed. B) Reversing a half reaction makes it a reduction potential. C) Each electrochemical cell consists of a reduction half cell and an oxidation half cell. D) A voltaic cell is also called a battery. E) The potential difference of a cell is the voltage of the cell.