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The pH value of ordinary water is:

  

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The pH value of ordinary water is:

(a) 7

(b) 6.5

(c) 5.3

(d) 7.8

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(c) 5.3

Explanation:

pH value of ordinary water is about 5.3 because some CO2 from atmosphere dissolves in pure water to form H2CO3 (carbonic acid), thus making water slightly acidic.

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