what is the volume of sulfuric acid in a 1000 ml water of 0.005 mol/L solution

Question

I want to prepare a solution on one liter of 0.005 mol/L of standardized sulfuric acid, how much volume of sulfuric acid is required for preparation of standardized H2SO4 (0.005 mol/L).

Answer 1

The answer will depend on the H2SO4 solution that you are starting with.  Let us assume it is commercially available Concentration Sulfuric Acid.  If so, it should be 98% which is 18.4 mol/L (18.4 M).  Thus,

(x ml)(18.4 M) = (1000 ml)(0.005 M)

x = 0.272 ml

In view of the difficulty in measuring 0.272 mls of concentrated H2SO4, it would be recommended that you make a more concentrated solution first, and then make the final solution.  Thus, you might make 0.5 M H2SO4 by diluting 27.2 ml concentrated H2SO4 to a final volume of 1 L, and then diluting this solution 1:100 (10 ml diluted to a final volume of 1000 ml) to obtain 0.05 M H2SO4.

 

Of course, this would need to be standardized against something like sodium carbonate, or sodium hydroxide.