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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
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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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.
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 |