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Chapter 4: Problem 19

Which of the following statements is(are) true? For the false statements, correct them. a. A concentrated solution in water will always contain a strong or weak electrolyte. b. A strong electrolyte will break up into ions when dissolved in water. c. An acid is a strong electrolyte. d. All ionic compounds are strong electrolytes in water

Short Answer

Expert verified
a. True b. True c. False; corrected statement: An acid can be either a strong or a weak electrolyte. d. False; corrected statement: Some ionic compounds are strong electrolytes in water, while others can be weak electrolytes or have limited solubility.

Step by step solution

01

Statement a: A concentrated solution in water will always contain a strong or weak electrolyte.

This statement is true. A concentrated solution in water implies a high concentration of solute molecules, which can be strong or weak electrolytes. Strong electrolytes ionize completely in water, while weak electrolytes only partially ionize.
02

Statement b: A strong electrolyte will break up into ions when dissolved in water.

This statement is true. A strong electrolyte is a compound that dissociates completely into its constituent ions when it is dissolved in water. This results in a solution containing a high concentration of mobile ions, which can effectively carry an electric current.
03

Statement c: An acid is a strong electrolyte.

This statement is false. Some acids, such as hydrochloric acid (HCl) and sulfuric acid (H2SO4), are strong electrolytes because they dissociate completely into ions. However, not all acids are strong electrolytes. For example, acetic acid (CH3COOH) and other weak acids only partially dissociate, meaning they are weak electrolytes. The corrected statement should be: An acid can be either a strong or a weak electrolyte.
04

Statement d: All ionic compounds are strong electrolytes in water.

This statement is false. While many ionic compounds are strong electrolytes, some ionic compounds can have limited solubility in water or dissociate only partially, thus behaving as weak electrolytes. The corrected statement should be: Some ionic compounds are strong electrolytes in water, while others can be weak electrolytes or have limited solubility.

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