A chemist needs to prepare a buffer using the carbonate system (information in the table in the previous quetion) with a final pH of 10. Which components should they mix in water to product this buffer?

Question

Question options:

H2CO3


HCO3-


CO32-

Answer 1

You answer this the same as the previous question; however, I don't get the options. It takes TWO of them to make a buffer, not one of them (although HCO3^- alone gives a pH of about 8.3

Answer 2

h2co3