The overall reaction in the electrolysis of brine can be redrsented by the following equation: 2NaCl+2H²0----> 2NaOH + H² + Cl²
10dm³ of brine flows through the electrolytic cell per hour. The brine entering the cell has a concentrated if 250 g of NaCl in 1 dm³ of brine. The used brine leaving the cell has a concentrated of 86g of NaCl in 1dm³ of the solution.
a)Calculate the mass of sodium hydroxide produced per hour.
2006-10-31 13:44:56 · 1 個解答 · 發問者 ? 1 in 科學 ➔ 化學
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b)Calculate the volume of chlorine produced per hour.
2006-10-31 14:57:07 · update #1
mass of NaCl consumped per 1dm3 = 250-86=164g
mass of NaCl consumped per hour = 164 X 10 = 1640 g
no. of mole of NaCl used = ( 1640/23+35.5 ) = 28.034
no. of mole of NaOH produced per hour = 28.034 X ( 23 + 16 + 1 ) = 1121 g
2006-10-31 14:31:24 · answer #1 · answered by ? 7 · 0⤊ 0⤋