Question

A sample of vinegar has a hydronium concentration of 1.6 × 10-3 M. What is the pH of the vinegar?
A) 1.6
B) 2.8
C) 4.1
D) 10.3

Answer 1

pH is defined as the negative log of Hydronium Ion concentration.

So, in order to find the pH of vinegar, we find the negative log of its hydronium ion concentration.

$pH=-log[ H_{3}O^{+}] \\ \\ pH=-log(1.6 * 10^{-3}) \\ \\ pH=2.8$

So, the pH of given vinegar solution will be 2.8.

Therefore, the answer to this question is option B

Answer 2

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