solutions forming buffers....?

0 ⤊

solutions forming buffers....?

ok...this ones kinda tricky...i have four different choices, but one needs to be changed so that it is correct....

Which solution, when appropriately combined, could be used to produce a buffer??
a- HCl and NaOH
b- HNO2 and NaNO3
c- KI and KOH
d- HF and NaOH

thanks!

2007-05-06 08:03:00 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

d- HF and NaOH

2007-05-06 08:08:07 · answer #1 · answered by Anonymous · 0⤊ 0⤋

b-

But you have to change it to HNO2 + NaNO2. That way, adding a little HCl to the solution shifts the mix more to HNO2, while adding NaOH shifts it toward NaNO2. And because HNO2 is a weak acid, you don't get the full impact of H+ and OH-.

2007-05-06 08:10:56 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋