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The concentration of hydronium ions in a...

The concentration of hydronium ions in a cup of black coffee is `1.3 xx 10^(-5)` M. Find the pH of the coffee. Is this coffee acidic or alkaline?

A

4.89

B

3.89

C

2.2

D

None of these

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CHETANA PUBLICATION-Ionic Equilibria-EXERCIES
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