Q23 d. rate KINH IINOP e. None of the above 21. Calculate the concentration of O
ID: 697478 • Letter: Q
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Q23 d. rate KINH IINOP e. None of the above 21. Calculate the concentration of OH ions in a saturated Mn(OH2 solution. The solubility product for Mn(OH is 4.6× 10-14. a. 2.0×10-5 M b, 1.6×10-5 M c. 4.5×10-5M d. 1.0×10-5 M e. 3.2 x 10 M Which of the following species is the strongest oxidizing agent? a. Al* b. Pb2 c. Cu d. Al e. Cu 22. 23. Which of the following statements about the operation of a standard galvanie cell, ZalZn?'(1 MOPb MIIPb, is false? a. The [Zn"] increases b· The [Pb2+] ions are reduced. c. The [Pb'] increases. d· The zinc electrode is oxidized. e· The mass of the lead electrode increases. 24. For a particular process 20 kJ and w =-15 kJ. Which of the following statements is true? a. E = +35 kJ b. Work is done on the system by the surroundings c. Heat flows from the system to the surroundingsExplanation / Answer
23.
(c) Pb2+ ions increases is wrong.
Because, Pb2+/Pb acts as cathode where Pb2+ undergoes reduction to Pb. So, Pb2+ ions will decrease but not increase.
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