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You are asked to prepare 1.1L of a HCN/NaCN buffer that has a pH of 9.77...

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Chemistry

You are asked to prepare 1.1L of a HCN/NaCN buffer that has a pHof 9.77 and an osmotic pressure of 1.97atm at 298 K.

What masses of HCN and NaCN should you use to prepare thebuffer? (Assume complete dissociation of NaCN.)

......... I put in ( 1.09 ) and ( 1.09 ) but it says itsincorrect,,,,, Please Help!!

Answer & Explanation Solved by verified expert
4.3 Ratings (599 Votes)
we know that for a buffer pH pKa log conjugate base acid so pH pKa log NaCN HCN pKa for HCN is 921 so 977 921 log NaCN HCN NaCN HCN 363078 NaCN 363078 HCN given    See Answer
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