Question

Which of the following combinations will make a good buffer solution?

0.05 M H2CO3 + 0.05 M KHCO3
0.5 M HI + 0.5 M CsI
0.3 M NH4Cl
0.3 M NH4Cl + 0.1 M NH3
0.3 M NH4Cl + 0.1 M HCl

thanks
You KNOW #1 and #3 are buffers.

Related Questions

calculate pH of the buffer solution prepared by mixing 10 mL of 1.5 M HCl with 100 mL of 0.1 M K2CO3... 200X buffer is given in class.How much of stock sol and how much distilled water is used to make?... A chemist wants to make 150 mL of a 1.26 M solution of carbonic acid to be used in the lab. How man... When a base is introduced into this buffer, which of H2CO3 and HCO3− reacts with the base to maintai...