Homework Help: AP Chemistry

Posted by Toni on Saturday, January 26, 2013 at 2:58pm.

Water is being electrolysed in the presence of a non-reactive electrolyte under standard conditions. If 2.5 amperes of current flows through the circuit for 13.6 minutes at 25 degrees celsius and 1 atmosphere, what volume of hydrogen gas is produced?
Please, I need help with this question. Thank You.

AP Chemistry - DrBob222, Saturday, January 26, 2013 at 3:32pm
coulombs = amperes x seconds
2.5 A x 13.5 min x (60 sec/min) = about 2000 C (but you should do it more accurately)
2000C/96,485 = ?F
1 F will free 11.2 L hydrogen.

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