Answer to Question #272643 in General Chemistry for Ari

Question

39. Approximately two-thirds of all the sulfuric acid 

produced for industry is used in the production of 

fertilizers. Ammonium sulfate and potassium sulfate 

are both fertilizers that are manufactured using 

sulfuric acid. At a large fertilizer manufacturing plant, 

a technician begins to prepare some tests using a 

standard solution of sulfuric acid.

 a. The technician measures out 2.50 L of a standard 

solution of sulfuric acid with a concentration 

of 10.0 mol/L. Determine the amount of water 

that must be added to create a solution with a 

concentration of 3.75 mol/L.

 b. A large beaker contains 655 mL of a standard 

solution of sulfuric acid with a concentration of 

10.0 mol/L. This beaker is placed in a fume hood 

where evaporation can occur. Determine the 

amount of water that would have to evaporate in 

order for the solution to have a concentration of 

11.0 mol/L. 

Answer 1

Moles of sulfuric acid $=2.50×10=25moles$

Volume of water $=\frac{25}{3.75}=6.67litres$

Moles of sulfuric acid $=0.655×10=6.55moles$

Volume of water $= 6.55×11=72.05litres$