Question

1)what is the final pH of CHECOOH 0.18M ,CHECOONa 0.08M, HNO3 0.08M and NaOH 0.08M ? Ka=1.8^10(-5)

2)what fraction of free edta is in the form )y^4-) at ph=10?

Answer 1

For #2, use the HH equation and solve for the ratio base/acid