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vera_ewing

  • one year ago

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  1. JoannaBlackwelder
    • one year ago
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    What formula did you use?

  2. cuanchi
    • one year ago
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    what concentration of protons did you got?

  3. JoannaBlackwelder
    • one year ago
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    I didn't get that, can you show me how you got it?

  4. JoannaBlackwelder
    • one year ago
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    How did you get the concentration of A-?

  5. JoannaBlackwelder
    • one year ago
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    I don't understand what you mean.

  6. JoannaBlackwelder
    • one year ago
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    Right

  7. JoannaBlackwelder
    • one year ago
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    No. I didn't use Henderson Hasselbach.

  8. JoannaBlackwelder
    • one year ago
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    I used Ka=[H+][NO3-]/[HNO3]

  9. JoannaBlackwelder
    • one year ago
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    That is the pKa, but not the pH

  10. JoannaBlackwelder
    • one year ago
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    |dw:1437768705375:dw|

  11. JoannaBlackwelder
    • one year ago
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    Any ideas of what to do from there?

  12. Rushwr
    • one year ago
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    Hey henderson hasselbach equation is applicable only for buffers. For that there should be a salt made. Here no salt made. SO u should go in the regular method ! What is the answer they have given ? is it B? |dw:1437834152520:dw|

  13. Rushwr
    • one year ago
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    |dw:1437834282559:dw|

  14. Rushwr
    • one year ago
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    |dw:1437834421457:dw|

  15. Rushwr
    • one year ago
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    so that is how i choosed B. NOt sure about my calculation cuz I don't have a cal now so the answer may vary. But this is the method !

  16. Rushwr
    • one year ago
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    Hey what is the answer given @vera_ewing

  17. vera_ewing
    • one year ago
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    Yep, it was B.

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