The molarity of a solution of 5.0 g of KCl in 100. mL of solution is ________.
A)0.67 M
B)0.038 M
C)0.13 M
D)0.067 M
E)1.3 M

Question

Quizplus · Accepted Answer

The molarity of a solution is calculated by dividing the number of moles of solute by the volume of the solution in liters. To calculate the number of moles of KCl, we need to divide the mass of KCl by its molar mass. The molar mass of KCl is 74.55 g/mol.```moles of KCl = 5.0 g / 74.55 g/mol = 0.067 mol```The volume of the solution is 100 mL, which is equal to 0.1 L.```molarity = 0.067 mol / 0.1 L = 0.67 M```Therefore, the molarity of the solution is 0.67 M.

The Molarity of a Solution of 5