WhenapHpaperisdippedinasolution,thecolourofthepHpaper
changestodeepred.WhatwillbethepHofthesolution?
Answers
Question:
When a pH paper is dipped in a solution, the color of the pH paper changes to deep red. What will be the pH of the solution?
Answer:
We can tell the nature of solutions based on their pH levels, i.e, tell if they're acidic, basic, or neutral.
What is the pH scale?
The pH scale is a universal indicator that shows different colors based on the concentration of hydrogen ions in the solution.
The pH scale ranges from 0 - 17 where;
➝ 0 - 3 falls under the strongly acidic category.
➝ 3 - 5 falls under the moderately acidic category.
➝ 5 - 7 falls under the weakly acidic category.
➝ 7 - 9 falls under the weakly basic category.
➝ 9 - 12 falls under the moderately basic category.
➝ 12 - 14 falls under the strongly basic category.
From the attached image we can say that:
0 ➝ Dark red.
1 ➝ Red.
2 ➝ Light red.
3 ➝ Orange.
4 ➝ Light orange.
5 ➝ Orangish-yellow.
6 ➝ Greenish-yellow.
7 ➝ Green.
8 ➝ Greenish-blue.
9 ➝ Blue.
10 ➝ Navy blue.
11 ➝ Purple.
12 ➝ Dark Purple.
13 ➝ Violet.
14 ➝ Dark Violet.
According to the question, the pH paper shows a deep red color when dipped in the solution, we know that pH papers turn red in color when tested with strong acids.
Strong acids lie in the range of 0 - 3 pH levels, and 0 has the deepest red color.
Therefore, the pH of the given solution is 0.
