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which species is most predominates?

Smooth Operater

don't bug "operatEr"!
10+ Year Member
5+ Year Member
May 22, 2004
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1
    on the basis of the following equations and constants, which of the statment that are given below, is true.

    2 (CrO4)2- + 2 H+ <-----> (Cr2O7)2- + H2O K = 4.2e14
    (Cr2O7)2- + H2O <------> 2 HCrO4- K = 3e2

    A. (Cr2O7)2- predominates in acid solution
    b. HCrO4- predominates in acid solution


    The correct answer is HCrO4- . Is it b/c it has the biggest K value? Thanks
     
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