A) Explain how would you make 100mL of a carbonic acid buffer at 0.2 M as well as pH = 9.8 using 0.5 M HCO3 and either 0.1 M NaOH or 0.1 M HCl and water?
B) Explain what could you use to make a 0.5 M buffer at pH = 6.0? Explain how would you make it?