IV. Molar Analytical Concentration
A solution was prepared by dissolving 5.76g of KCl x MgCl2 x 6H2O (277.85g/mol) in sufficient water to give 2.000L. Calculate the molar analytical concentration of KCl x MgCl2 in this solution.
To calculate the molar analytical concentration of KCl x MgCl2 in the solution, we first need to determine the number of moles of KCl x MgCl2 present in the solution.
1. Calculate the molar mass of KCl x MgCl2 x 6H2O:
Molar mass = 277.85 g/mol
2. Determine the number of moles of KCl x MgCl2 x 6H2O:
Number of moles = mass / molar mass
Number of moles = 5.76g / 277.85g/mol
Number of moles = 0.0207 mol
3. Calculate the molarity of the solution:
Molarity = number of moles / volume of solution (in liters)
Molarity = 0.0207 mol / 2.000 L
Molarity = 0.01035 mol/L
Therefore, the molar analytical concentration of KCl x MgCl2 in the solution is 0.01035 mol/L.