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Sagot :
Answer:
For (a): The substances are known as acids and bases.
For (b): The color of the litmus for pH = 10 will be blue.
For (c): The color of the litmus for pure water will be purple.
Explanation:
pH determines the acidity or basicity of a solution. There are three types of solution classified based on the pH:
- If pH<7 then the solution is acidic in nature
- If pH>7 then the solution is basic/alkaline in nature
- If pH=7 then the solution is neutral in nature
Litmus paper is used as an indicator to know the type of solution. There are 2 types of litmus paper:
- Red litmus paper: It turns blue when placed in a basic/alkaline solution.
- Blue litmus paper: It turns red when placed in an acidic solution.
(a):
An acid is defined as the chemical species that produces hydrogen ions in the solution while a base is defined as the chemical species that produces hydroxide ions in the solution.
(b):
Given pH value = 10
The solution is basic in nature, thus the color of litmus will be blue.
(c):
Pure water is neutral in nature and has a pH of 7.
Thus, the solution of litmus would be purple.
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