Carbon dioxide combines with rainwater to form
A) phosphoric acid.
B) carbonic acid.
C) nitric acid.
D) sulfuric acid.
E) nitrous acid.

Name: Carbon dioxide combines with rainwater to form A) phosphoric acid. B) carbonic acid. C) nitric acid. D) sulfuric acid. E) nitrous acid.
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Question

Quizplus · Accepted Answer

When carbon dioxide dissolves in rainwater, it forms carbonic acid (H2CO3). This is a weak acid that can further dissociate into bicarbonate (HCO3-) and hydrogen ions (H+), which can contribute to acid rain.

Carbon Dioxide Combines with Rainwater to Form