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So the chem II....

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Replies to: So the chem II....

  • alohasam89alohasam89 Registered User Posts: 590 Member
    Good Luck Everyone!
  • MsuMsu Registered User Posts: 765 Member
    Does anyone have a chart of polyatomic ions...well..the most common ones. I can never remember their charges and can't find it in my books right now
  • wxmannwxmann Registered User Posts: 855 Member
    (SO4)2-
    (SO3)2-
    (ClO4)-
    (ClO3)-
    (ClO2)-
    (ClO)-
    (C2H3O2)-
    (BrO3)-
    (IO3)-
    (MnO4)-
    (Cr2O7)2-
    (CrO4)-
    (HCO3)-
    (CO3)2-
    (NH4)+
    (HPO4)2- (I'm not sure about charge on this one)
    (PO4)3-
    (S2O3)2- (I'm not sure about charge on this one)
    (NO3)-
    (NO2)-

    I think that's most of em
  • wxmannwxmann Registered User Posts: 855 Member
    For my question (see last page), yes I forgot to add 1M. That's important... sorry about that. The answer is C. I added that question cause I got a problem like that wrong on one of the practice tests. Don't forget about mole ratios (not everything's one to one)!
  • afruff23afruff23 Registered User Posts: 1,966 Senior Member
    (HPO4)2- is correct

    I'm not sure about (S2O3)2- though
  • MsuMsu Registered User Posts: 765 Member
    thanks, and good luck to you all
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