Questions: Which one of the following is characteristic of an acid? turns red litmus blue produces H3O+ in water has a slippery, soapy feel has a bitter taste is insoluble in water

Solution Steps

Acids have specific characteristics that distinguish them from bases and other substances. Some of these characteristics include:

• Acids produce hydronium ions (\(\mathrm{H}_3\mathrm{O}^+\)) when dissolved in water.
• Acids typically turn blue litmus paper red.
• Acids generally have a sour taste.

Let's analyze each option to determine which one is characteristic of an acid:

1. Turns red litmus blue: This is a characteristic of a base, not an acid.
2. Produces \(\mathrm{H}_3\mathrm{O}^+\) in water: This is a characteristic of an acid.
3. Has a slippery, soapy feel: This is a characteristic of a base.
4. Has a bitter taste: This is a characteristic of a base.
5. Is insoluble in water: This is not a general characteristic of acids.

Final Answer