Calculate the molality of solution which contains 20g of potassium chl

1.	Calculate the molality of solution which contains 20g of potassium chloride
Answer» ANSWER: Molarity = Number of moles / Amount of solution ( In liters) NaOH molar mass = 23 + 16 + 1 = 40 g => Number of moles in 4 g = 4 g / 40 g = 0.1 mole Amount of water = 0.5 liters Molarity = 0.1 Mole / 0.5 Litres => Molarity = 0.2 M Explanation:

Calculate the molality of solution which contains 20g of potassium chloride

Answer»

Molarity = Number of moles / Amount of solution ( In liters)

NaOH molar mass = 23 + 16 + 1 = 40 g

=> Number of moles in 4 g = 4 g / 40 g = 0.1 mole

Amount of water = 0.5 liters

Molarity = 0.1 Mole / 0.5 Litres

=> Molarity = 0.2 M

Explanation: