9
QuizMultiple Choice

Lab: Measuring pH — Unit test

Question 9 • Foothill-B Period-Chemistry-26/27B

What do strong acids and strong bases have in common?

Answer
A
They both partially dissociate, with reverse reactions occurring.
B
They both dissociate completely, with little or no reverse reactions.
C
They both remain intact when placed in water, with no dissociation taking place.
D
They both dissociate completely, with reverse reactions constantly taking place.

Explanation

Strong acids and strong bases dissociate essentially completely into ions when dissolved in water. Because the dissociation is so complete, there is little or no reverse reaction that reforms the undissociated acid or base. Therefore, the correct choice is B: they both dissociate completely, with little or no reverse reactions.

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