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Which of the following statements about the taste of bases is true?

A. Bases have a sweet taste

B. Bases have a bitter taste

C. Bases have a sour taste

D. Bases have no taste

Answer Explanation:

Bases have a bitter taste. However, tasting chemicals is not safe and should never be done.

Therefore, the Correct Answer is B.

Q #1: Which of the following is a characteristic property of bases?

A. Sour taste

B. Reaction with metals to release water

C. Turn phenolphthalein pink

D. Donate protons

Answer Explanation

One of the characteristic properties of bases is their ability to react with certain metals to release hydrogen gas. This reaction is not as common or vigorous as the reaction of acids with metals but is still a defining property of bases. An example of this reaction is the reaction between sodium hydroxide (\(NaOH\)) and aluminum (\(Al\)), which produces hydrogen gas (\(H_2\)).
Q #2: Which of the following statements about the pH of bases is correct?

A. Bases have a pH greater than 7

B. Bases have a pH equal to 7

C. Bases have a pH less than 7

D. Bases have a pH of 7 and can vary based on concentration

Answer Explanation

Bases have a pH greater than 7 on the pH scale, indicating their alkaline nature. The pH of a base solution increases as the concentration of hydroxide ions (\(OH^-\)) increases.
Q #3: How do bases affect the solubility of certain substances, such as fats and oils?

A. Bases decrease the solubility

B. Bases increase the solubility

C. Bases have no effect on solubility

D. It depends on the specific substance

Answer Explanation

Bases increase the solubility of certain substances like fats and oils. This property is utilized in the process of saponification, where bases (such as sodium hydroxide) react with fats to produce soap and glycerol.

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