Answer to Question #126176 in General Chemistry for ANTEPIM

Question

a solution is prepared by dissolving 2.5g of NaOH in 250 cm3 of solution.what is the concentration of the solution in mol dm-3 {Na=23,H=1}

Answer 1

molar mass of NaOH is 40 g

hence moles of NaOH here = $\frac{2.5}{40}=0.0625$

concentration = $\frac{0.0625}{0.25}=0.25$