45.2: Introduction
- Page ID
- 29379
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Acids contribute hydrogen ions (\(\ce{H+}\)) into a solution during a chemical reaction, making them proton donors. Bases contribute hydroxide ions (\(\ce{OH-}\)) into a solution during a chemical reaction or bond with a proton making them proton accepters. Phenol solution turns yellow in acidic solutions and remains red in basic solutions. There are many indicators that a chemical reaction has occurred, including color change.