What would be the molarity of one litre solution of 22.2 ~g of CaCl ₂ ?

Step-by-step solution

The molar mass of CaCl ₂ is calculated as follows: Molar mass = 40.08 + 2 35.45 = 40.08 + 70.9 = 110.98 g/mol . Approximating the molar mass of CaCl ₂ as 111 g/mol for calculation: Number of moles of CaCl ₂ = mass molar mass = 22.2 g 111 g/mol = 0.2 mol . Molarity ( M ) is defined as the number of moles of solute per litre of solution: M = moles of solute volume of solution in litres = 0.2 mol 1 L = 0.2 M . Answer: 0.2 M