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IsTim

  • 3 years ago

The hydroxide ion concentration in a 0.157 mol/L solution of sodium propanoate, NaC3H5O2 (aq) is found to be 1.1*10^-5 mol/L. Calculate the base ionization constant for the propanoate ion.

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  1. IsTim
    • 3 years ago
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    I am using the Formula Ka*Kb=Kw. Rearranged then into Kb=Kw/Ka. Kw is a constant; 1.0*10^-14. Originally attempted using formula Kw=[H30}{OH^-}. Answer was 9.09*10^-10. Actual answer is 7.7*10^-10.

  2. IsTim
    • 3 years ago
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    @saifoo.khan @Hero @ParthKohli

  3. IsTim
    • 3 years ago
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    Finally, got some people.

  4. Hero
    • 3 years ago
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    What world am I in? Chemistry? Really? Sorry I'm not the guy.

  5. IsTim
    • 3 years ago
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    @.Sam. @Callisto

  6. A.Avinash_Goutham
    • 3 years ago
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    that's the salt of a strong base and a weak acid.....

  7. IsTim
    • 3 years ago
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    Sodium propanoate?

  8. muhammad9t5
    • 3 years ago
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    base ionization constant means PoH?

  9. IsTim
    • 3 years ago
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    I don't think so, but it's mentioned in this part of the textbook.

  10. A.Avinash_Goutham
    • 3 years ago
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    so ther's some other formula to calculate that i suppose.......

  11. muhammad9t5
    • 3 years ago
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    yes thats the PoH and 1st one is pH(Hydrogen Concentration)

  12. IsTim
    • 3 years ago
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    So far, I attempted to use Kw=[H3O][OH], kakb=kw and kb=[HB][OH]/[B]

  13. muhammad9t5
    • 3 years ago
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    please have a look on http://www.chem.purdue.edu/gchelp/howtosolveit/Equilibrium/Calculating_pHandpOH.htm

  14. A.Avinash_Goutham
    • 3 years ago
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    2ph=14+pka+logc @25 degree c

  15. A.Avinash_Goutham
    • 3 years ago
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    use that.....u l get it....

  16. IsTim
    • 3 years ago
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    Sorry, which formula did oyu use? (Best use the equation editor or draw it out to get the message across)

  17. A.Avinash_Goutham
    • 3 years ago
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    help ur self......

  18. IsTim
    • 3 years ago
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    Wait, is this question related any way to pH Also, that was a rather rude way to brush me off.

  19. muhammad9t5
    • 3 years ago
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    yes

  20. huneya
    • 3 years ago
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    http://herh.ccrsb.ca/staff/FarrellL/chem12/acids/acid-base-review-answers.pdf

  21. IsTim
    • 3 years ago
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    Ok. Thank you all. I was not suppose to do questions related with pH yet. Thank you for clearing that up.

  22. huneya
    • 3 years ago
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    ur welcome

  23. muhammad9t5
    • 3 years ago
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    You are welcome friend!

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