Medal and fan

Which of the following pairs would make a good buffer?
A. HNO3 and NO3-
B. HCl and NaOH
C. CH3OOH and NaOH
D. H2C2O4 and HC2O4-

I chose C. Would that be correct?

Thanks(:

Question

Medal and fan

Which of the following pairs would make a good buffer?
A. HNO3 and NO3-
B. HCl and NaOH
C. CH3OOH and NaOH
D. H2C2O4 and HC2O4-

I chose C. Would that be correct?

Thanks(:

aaronq · Answer

To make a good buffer, you need a weak acid and it's conjugate base.  is CH3OOH supposed to be CH3COOH?

It would work since some of the acid will be neutralized by the base.. but I think the oxalate/oxalic acid pair is a better option.

anonymous · Answer

Yes sorry, it was a typo. So you think D would be a better option?

aaronq · Answer

yeah. Acetic acid/sodium hydroxide would be fine to make the buffer, but it wouldn't be the buffer pair.

anonymous · Answer

Awesome, thankyou(:

aaronq · Answer

no problem!