Respuesta :

Answer:

B

Explanation:

Sample B takes more drops for both P- and T-alkalinity tests to reach pH 8.3 and 4.5. So it is more acidic to begin with.

pH is equal for all three.

Now look at the drops amount

  • 21<52<25

Higher the drops lower the solubility or its less acidic.

So sample A is most acidic then local then sample B