Question

How many moles of NaOH must be dissolved in water to make 4.0 liters of a 2.0 M solution?

Answer 1

Answer:

molarity = no. of moles of solute / 1 liter . * one moles of sodium hydroxide = 40 gm of sodium hydroxide. so we can said ; if want prepare 1 molar NaOH solution then we need 40 gm NaOH dissolve in one liter of water so it became one 1 molar NaOH solution.