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September 5, 2015

Homework Help: chem

Posted by Rachel on Saturday, April 9, 2011 at 2:27pm.

Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution?

1)NaCN and NaOH
2) HCl and NaOH
3) HCN and NaOH
4)HCl and NaCN
5) NaCN and HCN

is the answer 1 and 5??

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