Homework Help: chemistry

Posted by Alex on Sunday, April 20, 2008 at 12:24am.

A car bumper is plated with chromium using chromium(III) ions in solution. If a current of 54 A flows in the cell for 45 min 30 s, determine the mass of chronium deposited on the bumper.

chemistry - DrBob222, Sunday, April 20, 2008 at 11:35am
amperes x seconds = coulombs
1 coulomb will plate 1 equivalent weight of Cr.
1 equivalent weight Cr = atomic mass/change in # electrons for the half cell for Cr.

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