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Pure rain water is slightly acidic primarily because? 1. there is enough natural

ID: 768451 • Letter: P

Question

Pure rain water is slightly acidic primarily because? 1. there is enough naturally-occurring rainwater NOx from decaying plant matter to make HNO3 2. there is enough naturally-occurring SO2 to make H2SO4 3. The statement is false; pure rain water is actually a little basic because it reacts with atmospheric O2 to form hydrogen peroxide (H2O2), which dissociates into two OH radicals. 4. it reacts with atmospheric CO2 to form H2CO3, a weak acid. 5. The statement is false; Pure rainwater has a ph of 7.

Explanation / Answer

the statement 4. it reacts with atmospheric CO2 to form H2CO3, a weak acid. is correct.

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