What is the molarity of the solution made by adding 5 mL of 0.1 M #HCl# to 45 mL of the water is 0.01?

1 Answer
Sep 20, 2017

Answer:

Well, the new concentration is #0.01*mol*L^-1#, i.e. you have diluted the original concentration tenfold....

Explanation:

And we use the relationship...

#"Molarity"="Moles of solute"/"Volume of solution"#

#=(5xx10^-3*Lxx0.1*mol*L^-1)/(50xx10^-3*L)=0.01*mol*L^-1#....

How did I know that the volume was #50*mL#..