determine the ph of a 0.03 m solution of nah 2po4? assume h3po4 has a pka1 of 2.1 and a pka2 of 7.2 and a pka3 of 12.7. 

1. 4.36

2. 7.11

3. 4.65

4. 7.40

5. 9.95

6. 1.81

determine the ph of a 0.03 m solution of nah 2po4?...
4.36