slove the pH of the following

(a) 100 mL of pure water:

(b) 100 mL of pure water + 10 mL of 1 M NaCl

(c) 100 mL of pure water + 10 mL of 1 M NaOH

(d) 100 mL of pure water + 10 mL of 1 M NaCl + 10 mL of 1 M NaOH

(e) 100 mL of pure water + 10 mL of 1 M HCl + 10 mL of 1 M NaOH

(f) 100 mL of pure water + 1 nL of 1 M HCl

And find thr concentrations of all the species in thr solution.