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Which set of 1 Molar solutions has the correct pH values?

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Correct Answer: D. Hydrochloric acid pH = 0; acetic acid pH = 4; water pH = 7; ammonia solution pH = 10; sodium hydroxide solution pH = 14.
Acids have pH values of less than 7, with the stronger the acid the lower the pH. Bases have pH values of greater than 7, with the stronger the base the higher the pH. Typically:
- Strong acids have a pH of 0 or less, hydrochloric acid pH = 0.
- Weak acids between pH 3-6, acetic acid pH = 4.
- Neutral solutions have pH = 7, water pH = 7.
- Weak bases have a pH 8-10, ammonia solution pH = 10.
- Strong bases have a pH of 14 or more, sodium hydroxide solution pH = 14.
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