Question

24.5 g of H2SO4 (98 g/mol) is added with h20 to make up to 800 ml of a solution. If 50 ml of the H2SO4 is added with 100 ml of H20, what will be the molarity of the diluted solution?

MaVa=MbVb
(0.3125)(50)=(Mb)(100)
Mb= 0.16 M

No huh?

Answer 1

Assuming the 50 mL solution + 100 mL H2O equals 150 mL (that is that the solutions are additive, and technically, they are not additive), then that 100 on the right should be 150 and Mb = 0.3125/3 = ? Also note that you are allowed three significant figures so I would report 0.104 M