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pH Testing of Common Liquids
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The pH of grapefruit juice is higher than that of vinegar, indicating that grapefruit juice is less acidic than vinegar.

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Answer

Because pH measures how many hydrogen ions a liquid contains, a higher pH means fewer hydrogen ions and therefore a lower acidity. Grapefruit juice has a pH around 3. 5, while vinegar typically has a pH close to 2. 5; the larger number for the juice shows it has fewer hydrogen ions than vinegar. The lower concentration of hydrogen ions in grapefruit juice is why it feels less sour to the taste buds.

Detailed Explanation

A lower pH number means a higher concentration of hydrogen ions, which makes a liquid more acidic. Other options are incorrect because The mistake is thinking that a higher pH value means less acidity.

Key Concepts

pH scale
acidity and alkalinity
universal indicator
Topic

pH Testing of Common Liquids

Difficulty

medium level question

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understand

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