Question

A group of students have been instructed to make a 50 mL, 6M NaCl solution by their teacher. What amount of NaCl should they use?

Answer 1

Answer:

Correct option is

C

C

'C' has made the desired solution

Mass by volume %=

Volume of solution

Mass of solute

×100

=

100

50

×100

=50% mass by volume

50 % Mass by volume means 50g of NaOH is dissolved in 100ml of solution. So C makes the solution. A has taken 100 ml of water itself. Hence, A does not make the desired solution. B has taken 100 gm of water. Thus, for B also, the solution will not be 50% mass by volume.