I need some help with a few problems. Thanks!
(1) You have a pH Electrode that reports a voltage in
mV, which is proportional to the hydrogen ion concentration
in solution. You also have pH buffers at known pH of say
4, 7 and 10. What do you do to translate the mV reading
into pH values for any given solution with pH between
4 and 10?
(2) You have DI water plus CaCl2 and NaHCO3 salts.
What do you do to prepare a solution with Ca concentration
of 10 mmol/l and total C concentration of 2 mmol/l?