Asian Posted September 3, 2008 Share Posted September 3, 2008 What mass of chromium metal can be produced in 1.00 h by the electrolysis of K2Cr2O7 solution using a current of 15.0 A? I know the answer is 4.85 g but how do you get that? Link to comment Share on other sites More sharing options...
big314mp Posted September 4, 2008 Share Posted September 4, 2008 1 amp is 1 coulomb per second. There are 96485 coulombs in a mole of electrons. The chromium in dichromate is hexavalent (i.e. +6 charge). The molar mass of chromium is 52.00 g/mol. Hopefully that is enough info, without completely giving it away Link to comment Share on other sites More sharing options...
hermanntrude Posted September 4, 2008 Share Posted September 4, 2008 moved to homework help. the information big314mp gave you should be enough. If you can't see how, check your textbook, ask your instructor, or PM me Link to comment Share on other sites More sharing options...
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