Question

Is this statement true or false and please explain why:

There is a 9 M aqueous HCl solution in the stock room, but a 4.5 M solution is required for an experiment. Doubling the volume of the 9 M sample with water will produce the 4.5 M solution.

Answer 1

yes it is correct

by dilution formula M₁V₁ =M₂V₂

now M₁=9M , let V₁=1L ,if we double the volume of solution V₂=2L

So 9M*1L =M₂*2L

So M₂=(9M*1L)/2L =4.5M

So doubling the volume of the 9 M sample with water will produce the 4.5 M solution

thank you