Homework Help: Chemistry-Please help

Posted by Thy on Monday, November 5, 2012 at 11:51pm.

The question is: the arsenate ion has the formula AsO4^3-. Write the formula of the corresponding acid that contains this anion. I don't really understand what I need to do. please help!

Chemistry-Please help - DrBob222, Tuesday, November 6, 2012 at 1:15am
You're supposed to write the acid. For example, the acid of Cl^- is HCl. The acid of SO4^2- is H2SO4.
Therefore, the acid for AsO4^3- is H3AsO4.
Chemistry-Please help - Thy, Tuesday, November 6, 2012 at 2:20am
Thank you for your help.

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