posted by karla .
25mL of tap-water is titrated with .00500 M EDTA. 7.95mL of EDTA is required for complete reaction, Whatis the molarity of that total water hardness in the 25mL sample
mols EDTA = M x L = ?
mols EDTA = mols hardness (Ca + Mg)
M hardness = mols/L = mols from above/0.025L