Composition analysis of a mixture of CaCl2 and NaCl was carried by dissolved 2.500 g of powder in distilled water and make up to 250.0 cm3 in a volumetric flask. 25.00 mL sample solution was titrated against with 0.170 M of AgNO3 solution. The volume of AgNO3 solution required was 26.00 mL, a) Calculate the concentration of Cl- ion in the sample solution in M and % w/v