ALEKS: Calculating the composition of a buffer of a given pH

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  • Опубликовано: 7 ноя 2024

Комментарии • 6

  • @abdullahmady9259
    @abdullahmady9259 3 года назад

    Why did you do 10^0.333 and not 10^-0.333 with a negative sign?

    • @RoxiHulet
      @RoxiHulet  3 года назад +2

      The antilog of x is 10^x, not 10^-x
      If you're confusing this with the antilog used to "undo" the pH equation, remember that pH = -log[H3O+], so when we use the antilog function in the pH equation, we need to include the negative sign from that equation.

  • @adammostafa2741
    @adammostafa2741 2 года назад

    How did you get 3.347?

    • @RoxiHulet
      @RoxiHulet  2 года назад

      pKa = -log(Ka) and the problem says the Ka = 4.5 x 10^-4

    • @adammostafa2741
      @adammostafa2741 2 года назад

      @@RoxiHulet Thank you, How would you find the mass if the Kb was given instead of the Ka

    • @RoxiHulet
      @RoxiHulet  2 года назад

      @@adammostafa2741 find the mass of what?