40 g NaOH is dissolved in 5 L water-solution. Express the concentration in g/L. [Ans. 8 g/L]
Amount of NaOH = 40 g
Volume of solution = 5 L
Concentration = Amount\ of\ NaOH \over Volume\ of\ solution
Substituting the given values, we get:
Concentration = 40\over 5 = 8 g/L
Therefore, the concentration of NaOH in the solution is 8 g/L.