Answers Chemistry Practice TestQuestion 5

5

practice testMultiple Choice

Practice Test

Question 5 • Chemistry

Which of these equations correctly expresses the self-ionization of water?

Answer

A

cap h sub 2 cap o plus cap h sub 2 cap o left right arrow 2H sub 3 cap o raised to the plus power

B

cap h sub 2 cap o plus cap h sub 2 cap o left right arrow cap h sub 3 cap o raised to the plus plus OH raised to the negative power power

C

cap h sub 2 cap o plus cap h sub 2 cap o left right arrow 2 OH raised to the negative power

D

cap h sub 2 cap o plus cap h sub 3 cap o raised to the plus left right arrow cap h sub 2 cap o plus OH raised to the negative power power

Explanation

In water’s self-ionization, one water molecule transfers a proton to another. This produces a hydronium ion (H₃O⁺) and a hydroxide ion (OH⁻): 2H₂O ⇌ H₃O⁺ + OH⁻. Choice B shows both products; the other choices do not show the correct pair of ions.

AI-written and checked against the verified answer.

More from this Course

10 verified answers

Quiz

10 verified answers

Quiz