GRAN FUNCTION PLOTVt, mLpHF110-pH.(Vs+Vt)0.006.970.000021NORMALITY ACID, N0.020980.546.660.000044Vs SAMPLE VOL200mL0.946.330.000094Ve VOL ACID AT F1 = 01.95GRAPHICAL INTERPOLATION1.365.970.000216Ve VOL ACID AT F1 = 01.95INTERCEPT METHOD1.745.470.000684TOTAL ALKALINITY10.2mg/L CaCO32.254.560.0055702.374.430.0075192.824.130.015035METHOD3.243.950.0228041. ENTER Vt & pH DATA INTO TABLE3.903.780.0338392. ENTER NORMALITY OF ACID & SAMPLE VOLUME, Vs4.373.680.0426993. Ve IS CALCULATED FROM INTERCEPT AUTOMATICALLY FORDATA RANGE SHOWN COLOURED. USE ONLY DATA FOR pH VALUES < 4.54. ALTERNATIVELY, PLOT ALL F1 V Vt & THEN DETERMINE VeFROM LINEAR PART OF GRAN PLOT

GRAN FUNCTION PLOT

Ve = 1.95 mLF1VOLUME ACID, mLGRAN FUNCTION, F1GRAN PLOT: MELBOURNE TAP-WATER (MULGRAVE)