Question

Preparation of Standard Buffer for Calibration of a pH Meter The glass electrode used in commercial pH meters gives an electrical response proportional to the concentration of hydrogen ion. To convert these responses to a pH reading, the electrode must be calibrated against standard solutions of known H+ concentration. Determine the weight in grams of sodium dihydrogen phosphate (NaH2PO4 · H2O; FW 138) and disodium hydrogen phosphate (Na2HPO4; FW 142) needed to prepare 1 L of a standard buffer at pH 7.00 with a total phosphate concentration of 0.100 M

Answer 1

Answer:

ok it ispreparation of standard buffer the glass electrode used in commercial printers that you have to proportional to the consideration to APS during the standard constitution of h + known and grammar of sodium hydrogen phosphate and hydrogen phosphate and two hpo4 1 litre of standard buffer at pH 7.2 phosphate concentration of 1m