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May 30, 2015

Homework Help: Chemistry

Posted by Alex on Wednesday, February 27, 2008 at 8:12pm.

The following equations are intepretations of the evidence from the reactions of four metals with various cation solutions. Make a table of half-reactions and arrange the four metallic ions and the hydrogen ions in order of their decreasing tendency to react. Label the strongest oxidizing agent and reducing agent.

Cd + 2H+ --> Cd2+ + H2
Hg + 2H+ --> Hg2+ + H2
Be + Cd2+ --> Be2+ + Cd
Ca2+ + Be --> Ca + Be

So I identified Cd, Hg, Be as the reducing agents and 2H+, Cd2+, Ca2+ as the oxidizing agents.

Now when making the table I can't identify which ones are the strongest and weakest. I know the method to do it. But for this question I don't know in what order they go. Can anyone help me?

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