A certain mass (m) of solid hydrated calcium chloride (CaCl2, 6H2O) is dissolved completely in distilled water A solution (S.) of volume 250ml and molar concentration 0.12mol L'is obtained 1.1 Determine (m)
1.2 Explain the procedure for the preparation of (S. )
1.3 Write the dissociation equation of the solute CaCl2, in water.
1.4 Deduce the molar concentration of the chloride ion in solution (So) 2 5g of impure lead nitrate Pb(NO3)2, is added to 0.012 mol of solution (S.) of CaCl2, The reactants are in stoicuometre ratio A reaction took place according to the following balanced reaction Pb(NO3)2 +CaCl2---> PbCl2 + Ca(NO3)2 2.1 Detemine the mass of the precipitate fomed 2.2 Deduce the %purity in lead nitrate used​