Multiple Choice
Which of the following is the correct definition of a Brønsted-Lowry acid?
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3. Acids and Bases
Acids and Bases
Multiple Choice
Which of the following statements is false regarding the strength of acids and bases?
A
The strength of an acid is determined by its concentration.
B
A strong acid completely dissociates in water.
C
A strong base has a high value.
D
A weak base partially dissociates in water.
Verified step by step guidance1
Understand the concept of acid and base strength: Acid and base strength is determined by the degree of dissociation in water, not by concentration. A strong acid or base dissociates completely, while a weak one does not.
Analyze the statement 'The strength of an acid is determined by its concentration': This statement is false because concentration refers to the amount of acid or base in a solution, not its ability to dissociate.
Consider the statement 'A strong acid completely dissociates in water': This is true because strong acids, like HCl, dissociate fully in aqueous solutions.
Evaluate the statement 'A strong base has a high pH value': This is true because strong bases, like NaOH, dissociate completely and result in a high pH (greater than 7).
Review the statement 'A weak base partially dissociates in water': This is true because weak bases, such as NH₃, do not fully dissociate, resulting in a lower pH compared to strong bases.
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