Characteristics Of Acidity Or Basicity

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Which Description Correctly Characterizes The Acidity Or Basicity Of A Solution?

A) A solution with a pH of 3 is strongly basic

B) A solution with a pH of 7 is highly acidic

C) A solution with a pH of 10 is slightly basic

D) A solution with a pH of 1 is neutral

Correct Answer: C)

A solution with a pH of 10 is slightly basic

Explanation

A pH scale ranges from 0 to 14, where a rating below 7 is considered acidic and above 7 is basic. Any solution with a pH of 7 is considered neutral.

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Why Not the Other Options?

A) A solution with a pH of 3 is strongly basic: A solution with such a pH is strongly acidic, not basic.

B) A solution with a pH of 7 is highly acidic: A solution with a pH of 7 is neutral.

D) A solution with a pH of 1 is neutral: Incorrect. A pH of 1 indicates a very strong acid, far from neutral.

Properties of Acids and Bases

Property

Acids

Bases

Taste

Sour (e.g., vinegar, lemon)

Bitter (e.g., soap, baking soda)

Touch

Corrosive, not safe to touch

Slippery (mild bases)

Reacts with Metals

Yes, produces hydrogen gas

No significant reaction

Litmus Paper Effect

Turns blue litmus red

Turns red litmus blue

pH Range

0–6.9

7.1–14

Electrical Conductivity

Good (when ionized in water)

Good (if strong base)

Neutralization

Reacts with bases to form a salt and water

Reacts with acids to form salt and water

Additional Learning Points About PH Scale