Question

Answer for calculate the molarity of a solution containing 5 gr of naoh in 450ml solution

Answer 1

Answer:

Explanation:

molar mass of NaOH=40g per mole

no. of moles in 5g of NaOH=5/40=0.125

volume of solution=450mL=0.45L

molarity of solution=no.of moles of solute/volume of solution

                             =0.125/0.45

                             =0.277777777778=0.28(approx.)

Answer 2

Answer:

250/8

molarity = no. of moles / litre of solution

5/40 * 1000/4

=. 250 / 8