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11/09/2021 11:31 am
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Oxidation of succinate ions produces ethylene and carbon dioxide gases. On passing 0.2 Faraday electricity through an aqueous solution of potassium succinate, the total volume of gases (at both cathode and anode) at STP (1 atm and 273 K) is :
(a) 8.96 L
(b) 4.48 L
(c) 6.72 L
(d) 2.24 L
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11/09/2021 11:39 am
Correct answer: (a) 8.96 L
Explanation:
\(\overset{CH_2COO^-}{\overset{|}{CH_2COO^-}} + 2H_2O\) → \(\overset{CH_2}{\overset{||}{CH_2}}\) + CO2 + H2 + 2OH-
Total equivalent of
C2H4 + CO2 + H2
= 0.2 + 0.2 + 0.2 = 0.6
Total moles of gases
= \(\frac{0.2}{2}\) + \(\frac{0.2}{1}\) + \(\frac{0.2}{2}\)
= 0.4
V = \(\frac{nRT}{2}\) = \(\frac{0 .4 \times 0.0821 \times 273}{1}\)
= 8.96 L