You prepare a 0.200M solution of a monoprotic buffer at pH 7.22. The pKa of this...

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Chemistry

You prepare a 0.200M solution of a monoprotic buffer at pH 7.22.The pKa of this buffer is 7.53 at room temperature.

a. What is the molarity of the acid and conjugate base necessaryto make the buffer. [HA]=? [A-]=?

b. A separate 1.0 M stock solution of the acid and conjugatebase is made/ How many mL of each will you use to prepare 1.0 L ofthe buffer in part a? mL of HA=? mL of A-=?

c. You add 29mL of 2.3 M NaOH to your 1.0L of buffer. Is thebuffer capacity able to adequately handle this new addition ofNaOH? What will be your new pH?

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4.5 Ratings (974 Votes)
a Henderson eq is pH pka log AHA where HA is acid A is conjugate base a 722 753 log AHA A 049 HA b A moles 049 HA moles initially A conc HA con 1M let volume of A be    See Answer
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