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Posted by on Wednesday, April 11, 2012 at 11:21pm.

Can the NH3/NH4Cl system be sued to prepare a buffer of a pH 9.5? why or why not? Can it prepare a buffer of pH 5? There were two buffers, 0.2 M and 0.1M.

  • Chem Lab - , Wednesday, April 11, 2012 at 11:26pm

    I don't know how we can sue the NH3/NH4Cl system; however, the pKa for NH3 is 9.25 and that is within the range. What about the two buffers of 0.2M and 0.1M?

  • Chem Lab - , Wednesday, April 11, 2012 at 11:30pm

    Thank you, it should say 'used' not 'sued'.

  • Chem Lab - , Thursday, April 12, 2012 at 1:29am

    9.5 yes.
    5 no.

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