Using the principle of charge balance and assuming that (a) the above analyses are error-free, and (b) that the only missing ion is H+, calculate the pH of the sample:
2.41 mg/L Ca2+;
0.73mg/L Mg2+;
1.39mg/L Na+;
2.44mg/L HCO3-;
2.13 mg/L Cl-;
9.62mg/L SO4(2-);
0.28mg/L (NO3-)-N