Answer:
Molarity = 0.2 M
Explanation:
Given data:
Molar concentration = ?
Volume of solution = 250 mL (250 mL/1000 = 0.25 L)
Mass of Na₂CO₃ = 5 g
Solution:
Number of moles of Na₂CO₃:
Number of moles = mass/molar mass
Number of moles = 5 g / 106 g/mol
Number of moles = 0.05 mol
Molarity = number of moles / volume of solution in L
Molarity = 0.05 mol / 0.25 L
Molarity = 0.2 M (M = mol/L)
