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Which of the following is a characteristic of an acid?

A Tastes sour.

One of the characteristics of an acid is that it tastes sour. However, it's important to note that tasting acids is not recommended as they can be harmful or corrosive to living tissues. Acids actually release hydrogen ions (H+) when dissolved in water, not hydroxide ions. Acids typically turn litmus paper red, not blue. Acids have a pH lower than 7. A pH greater than 7 corresponds to bases, which are the opposite of acids. It's important to handle and work with acids safely and follow proper laboratory procedures.

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