Question

calculate the molarity of each solution.

part a ) 0.112 mol of sucrose in 658 mL of solution

part b) 0.245 mol of KNO3 in 0.875 L of solution

part c) 1.9 mol of KCl in 2.1 L of solution

Answer 1

a)

Molarity = number of moles of solute per liter of solution

molarity of sucrose = (0.112mol/ 658ml) × 1000ml

molarity of sucrose = 0.170M

b)

Molarity of KNO3 = ( 0.245mol/ 0.875L) × 1L

Molarity of KNO3 = 0.280M

c)

Molarity of KCl = ( 1.9 mol/2.1L ) ×1L

Molarity of KCl = 0.905M