Question: Please answer the two questions, will upvote if given answers are met and correct solution. Thank you. 11. The overvoltage of Hz on Pb was

Please answer the two questions, will upvote if given answers are met and correct solution. Thank you.

and correct solution. Thank you. 11. The overvoltage of Hz on Pb

11. The overvoltage of Hz on Pb was determined in 0.1 molal H,solution (Y=0.265) by measuring during electrolysis the potential of the lead cathode against a normal calomel electrode. The potential thus observed was 1.0685 volts. What is the overvoltage of H, on Pb? (Ans. 0.713 volts) 14. A sample of CH,COOH is found to freeze at 16.4C. Assuming that no solid solution is formed, what is the concentration of impurities in the sample? (Ans. m = 0.077 mole in 100 g CH COOH)

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