Problem

At a potential of -1.0 V (versus SCE), CCl4 in I иЦ methanol is reduced to Several differe...

At a potential of -1.0 V (versus SCE), CCl4 in I иЦ methanol is reduced to

Several different 0.750-g samples containing CCl4, CHG3, and inert organic species were dissolved in methanol and electrolyzed at - 1.0 V until the current approached zero. A coulometer indicated the charge required to complete the reaction as given in the middle column of the table below. The potential of the cathode was then adjusted to — 1.8 V. The additional charge given in the last column of the table was required at this potential.

Sample No.	Charge required at 21.0 V, C	Charge required at 21.8 V, C
1	11.63	62.60
2	21.52	85.33
3	6.22	45.98
4	12.92	5.31

Calculate the percentage of CCL. and CHO3 in each mixture.

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Solutions For Problems in Chapter 22

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