Question

A 0.50 M stock solution of sodium thiosulfate is used to prepare a dilute solution. If 250.0 mL
of the concentrated solution is diluted to a volume of 2.5 L, determine the molarity of the
new solution.
0 0.025M
O 0.10 M
O 0.050M
0 0.075M

Answer 1

Answer:

C. 0.050 M

Explanation:

250.0 mL = 0.2500 L

M1V1 = M2V2

0.50 M* 0.2500 L = M2 *2.5 L

M2 = (0.50*0.2500)/2.5 =0.050 M