A.) If 20 mL of 0.010 M H3PO4 solution is completely neutralized
by 60.0 mL of Ca(OH)2 solution, what is the molarity of the Ca(OH)2
solution? Answer must be expressed in decimal number.
B.) Calculate the concentration of carbonate ion in a saturated
solution of calcium carbonate to which calcium chloride has been
added until [Ca2+] =0.015 M at 250C. Ksp for CaCO3= 2.8 x 10-9