# Which one of the following best describes an acid? A. A substance that isn't soluble in water B. A substance that produces hydrogen ions in a water solution C. A substance that produces hydroxide ions in a water solution D. A substance that reacts with other acids

###### Question:

Which one of the following best describes an acid?
A. A substance that isn't soluble in water
B. A substance that produces hydrogen ions in a water solution
C. A substance that produces hydroxide ions in a water solution
D. A substance that reacts with other acids

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