Asked by Rachel
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??
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??
Answers
Answered by
DrBob222
I don't believe 1 will do it.
Yes on 5. Also 3.
Buffers are weak acid and salt or weak base and salt.
HCN and NaOH can prepare the salt and have HCN left over.
NaCN is the salt HCN for the acid.
Yes on 5. Also 3.
Buffers are weak acid and salt or weak base and salt.
HCN and NaOH can prepare the salt and have HCN left over.
NaCN is the salt HCN for the acid.
Answered by
Rachel
I tried those and it was wrong
Answered by
Jane
1,3,5 will do it
Answered by
Robert
1-No
2-No
3-Yes
4-Yes
5-Yes
2-No
3-Yes
4-Yes
5-Yes
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