Properties of Acids and Bases

Question 1

Consider this reaction: Which is the acid in this reaction?

Revolt · Accepted Answer

HBr

Question 2

Which examples did your answer include?

Revolt · Accepted Answer

Examples of common acids include vinegar, lemon juice, and soda.; Examples of common bases include ammonia, bleach, and antacids.; Common uses of acids include flavoring and preserving foods, and they are found in cleaning products.; Common uses of bases include neutralizing acids, and they are found in cleaning products.

Question 3

Consider this reaction: Which is the base in this reaction?

Revolt · Accepted Answer

KOH

Question 4

Consider this reaction: Which statement is most likely true about KOH?

Revolt · Accepted Answer

It turns clear phenolphthalein pink.

Question 5

Consider this reaction: Which statement is most likely true about HBr?

Revolt · Accepted Answer

It turns blue litmus red.

Question 6

A pool owner adds a compound containing chlorine to the pool to disinfect it. However, too much of the compound is added. As a result, the water becomes too acidic. What could the pool owner do to reduce the acidity of the pool?

Revolt · Accepted Answer

He could add a base to the pool to neutralize the acid.

Question 7

Which is the best reason that a geologist might carry a small dropper bottle filled with hydrochloric acid when doing fieldwork?

Revolt · Accepted Answer

to test for the presence of carbonate minerals in a rock

Question 8

A beaker contains a solution of calcium hydroxide (Ca(OH)2) in water. A student places a straw in the beaker and then breathes into the solution through the straw. As the student breathes into the solution, a white precipitate forms. What is the most likely composition of the precipitate?

Revolt · Accepted Answer

CaCO3

Question 9

During a lab experiment, students are supposed to add small pieces of magnesium, aluminum, and calcium metal to concentrated hydrochloric acid in a test tube. The laboratory instructions include strong safety warnings to make sure that no sparks, open flames, or high heat sources are present in the room when students perform this experiment. Which is the most likely reason for these warnings?

Revolt · Accepted Answer

Hydrogen gas is highly flammable.

Question 10

Identify two acids and two bases that you use or come into contact with in an average week. Identify uses for each substance.

Revolt · Accepted Answer

Two acids I encounter in an average week are vinegar (acetic acid), which is used for flavoring and preserving food, and citric acid found in lemon juice or soda, used for flavoring. Two bases I encounter are ammonia and bleach, which are used as household cleaning products for disinfecting and stain removal. I also encounter antacids like milk of magnesia to neutralize stomach acid.

Properties of Acids and Bases Answers

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