The students determined the hardness by calculating the concentration of Ca2+ present in the sample. 25.0ml aliquots of the sample required an average of 6 ml of 0.015 mol/L Sodium carbonate solution to convert all the Ca2+ present to Calcium carbonate. Calculate:
a) no. of moles of Calcium carbonate formed in each 25ml water sample
b) concentration of Ca2+ in water sample in mol/L
C) concentration of calcium ions in the water sample in ppm (mg/L)
Not sure if I went this the right way. Can someone please post their working out. Thanks! All help greatly appreciated
a) no. of moles of Calcium carbonate formed in each 25ml water sample
b) concentration of Ca2+ in water sample in mol/L
C) concentration of calcium ions in the water sample in ppm (mg/L)
Not sure if I went this the right way. Can someone please post their working out. Thanks! All help greatly appreciated