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Topic: something to ask about E.C.S.  (Read 2308 times)

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Offline kenny1999

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something to ask about E.C.S.
« on: May 13, 2011, 11:09:29 AM »
what I mean E.C.S is Electrochemical series (in case if it is not the abbreviated form)

In this series, the position of Ca and Na is reversed compared to that of reactivity series.

I would like to know why (reason) Ca is more reactive than Na in chemical cell but it is less reactive than Na when it comes to reacting with air, acid etc..

Thanks

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