Browns tubes indicator colour change to which colour?

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Multiple Choice

Browns tubes indicator colour change to which colour?

Explanation:
The test relies on a pH indicator in the Brown’s tube that changes colour as the solution’s acidity changes. When the reaction reaches a neutral or near-neutral pH, the indicator shows a green colour. This green end-point is what we’re looking for to signify the desired condition of the test. If the colour were yellow, the medium would be acidic; blue or purple would indicate a more alkaline state. The green colour, therefore, best matches the intended neutral endpoint of the indicator’s response.

The test relies on a pH indicator in the Brown’s tube that changes colour as the solution’s acidity changes. When the reaction reaches a neutral or near-neutral pH, the indicator shows a green colour. This green end-point is what we’re looking for to signify the desired condition of the test.

If the colour were yellow, the medium would be acidic; blue or purple would indicate a more alkaline state. The green colour, therefore, best matches the intended neutral endpoint of the indicator’s response.

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