Question

In science class, students are mixing water and a citric acid solution. Bao uses 26 mL water and 4 mL acid. Moses uses 17 mL water and 3 mL acid. Whose mixture is more acidic?

Answer 1

Moses's mixture is more acidic than Bao's mixture because it has a higher concentration of acid. Moses's mixture can be calculated as 3 mL / 20 mL = 0.15 M.

Step-by-step explanation:

The acidity of a solution is determined by the concentration of hydrogen ions (H+). The higher the concentration of H+ ions, the more acidic the solution. To determine which mixture is more acidic in this case, compare the concentration of acid in each mixture.

Bao's mixture contains 4 mL of acid in a total volume of 30 mL (26 mL water + 4 mL acid). Therefore, the concentration of acid in Bao's mixture can be calculated as 4 mL / 30 mL = 0.1333 M.

Moses's mixture contains 3 mL of acid in a total volume of 20 mL (17 mL water + 3 mL acid). Therefore, the concentration of acid in Moses's mixture can be calculated as 3 mL / 20 mL = 0.15 M.

Comparing the concentrations, we can see that Moses's mixture has a higher concentration of acid, making it more acidic than Bao's mixture.