Question

12. Answer question numbers 12(a) - 12(d) on the basis of your understanding
of the following paragraph and the related studied concepts:.
The most common method to get an idea about the pH of a solution is to use an acid-base indicator. An
indicator is a large organic molecule that works somewhat like a "color dye". Whereas most dyes do not
change colour with the amount of acid or base present, there are many molecules, known as acid-base
indicators, which do respond to a change in the hydrogen jon concentration. Most of the indicators are
themselves weak acids. A variety of indicators change colour at various pH levels. A properly selected
acid-base indicator can be used to visually "indicate the approximate pH of a sample.
12(a) Which of the following indicators help us to judge how strong a given
acid or base is? (1m)
1 point
Onion extract
Methyl orange
Universal indicator
O Phenolphthalein​

Answer 1

Answer:

universal indicator

Explanation:

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Answer 2

Answer:

CLASS is a pure natural and natural solution to the distance of the cell from its external values 2 to the distance of the cell from its external values and the Indian the

Explanation:

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