Clinical Chemistry > GIZMOS > TITRATION GIZMO DOCX 2022_Examinable (All)

TITRATION GIZMO DOCX 2022_Examinable

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Vocabulary: acid, analyte, base, dissociate, equivalence point, indicator, litmus paper, molarity, neutralize, pH, strong acid, strong base, titrant, titration, titration curve, weak acid, weak base ... Prior Knowledge Questions (Do these BEFORE using the Gizmo.) There are several definitions of acids and bases. According to the Brønsted-Lowry definition, an acid is a substance that is capable of donating a proton to another substance. A base is a substance that accepts protons. When an acid and a base are combined, the acid is neutralized as the base accepts the protons produced by the acid. One way to determine if a solution is acidic or basic is to use litmus paper, as shown above. There are two types of litmus papers: red and blue. How does litmus paper indicate an acid? If it is red litmus paper, depending upon the level of acidity or how high the pH level is. The higher the pH level the more the red litmus paper will turn blue. On the other hand, blue litmus paper will turn red depending upon how low the pH level is or how acidic the solution is. How does litmus paper indicate a neutral substance? If the substance is neutral, that means there are equal amounts of acids and bases in the solution. If this is the case, both red and blue litmus paper will turn purple. How does litmus paper indicate a base? If it is blue litmus paper, depending upon the level of acidity or how low the pH level is. The lower the pH level the more the blue litmus paper will turn red. On the other hand, red litmus paper will turn blue depending upon how high the pH level is or how alkaline the solution is. Gizmo Warm-up Litmus is an example of an indicator, a substance that changes color depending on its pH (pH is a measure of the concentration of protons, or H+ ions). In the Titration Gizmo, you will use indicators to show how acids are neutralized by bases, and vice versa. [Show More]

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