Which of the following is a characteristic property of acids?
- Turn litmus paper blue
- Bitter taste
- pH value above 7
-
React with metals to produce hydrogen gas
The correct answer is: D
Explanation
Acids are substances that can donate protons (H+) in aqueous solutions. When acids react with certain metals, they can release hydrogen gas (H2) as one of the products. This is a common behavior of many acids and can be used to distinguish them from other substances.
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