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April 19, 2014

Homework Help: Chemistry

Posted by lillian on Thursday, February 17, 2011 at 4:30pm.

when 6 M NaOH is slowly added to a solution containing chromium (III) ion, a precipate forms. However when an excess of 6 M NaOH is added, the precipated dissolves forming a complex ion with a coordination number of four.

1) write the formula of the precipitate.

2) write the formula of the complex ion.

i dont know how to do it

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