A student tests a sample drinking water and reports ph value as 6 at room temperature which of the following might hve been added in water?
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12
An acid may be added to the water
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24
Answer:
Bleaching powder
Explanation:
Because pH of simple drinking water is 7, to make it 6 we need a weak acid and bleaching powder is perfect for this job as it is also used to kill the germs for drinking water.
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