Question

A chemist uses 4.0 L of sulfuric acid solution to produce 3.2 gram of product. How much of the same sulfuric acid solution is needed to produce 8.0 gram of product?

6.4 L

15 L

7.8 L

10 L

Answer 1

The concept that can be used in order to determine the answer to this item is that of ratio and proportion. The ratio of the mass of the product to the sulfuric acid solution used in the first set should be proportional to that of the second. If we let x be the volume of the acid then, the equation that can be used is,

      3.2 g / 4 L = 8 g / x L

The value of x from the equation is 10. 

ANSWER: 10 L