Juan wants to dilute a 5 molar solution of sulfuric acid down to a 1 molar solution. What would be the best way for him to do this?
A.
Add 400 mL of a base such as NaOH to 100 mL of sulfuric acid.
B.
Add 400 mL of water to a beaker filled with 100 mL of sulfuric acid.
C.
Add 100 mL of sulfuric acid to 400 mL of a base such as NaOH.
D.
Add 100 mL of sulfuric acid to a beaker filled with 400 mL of water.

Question

Juan wants to dilute a 5 molar solution of sulfuric acid down to a 1 molar solution. What would be the best way for him to do this?
 A. 
Add 400 mL of a base such as NaOH to 100 mL of sulfuric acid.
 B. 
Add 400 mL of water to a beaker filled with 100 mL of sulfuric acid.
 C. 
Add 100 mL of sulfuric acid to 400 mL of a base such as NaOH.
 D. 
Add 100 mL of sulfuric acid to a beaker filled with 400 mL of water.

Vocaloid · Answer

review your safety protocol: you add acid to water not the other way around

as for the mathematical aspect of this problem, set up

M1V1 = M2V2, plug in the molar concentrations, and figure out the ratio between V2 and V1 you need to accomplish this