Is rainwater a strong weak or nonelectrolyte?

Question

Colin

Chemistry

25 July, 06:10

Is rainwater a strong weak or nonelectrolyte?

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Henry · Answer 1

Rainwater is fairly pure however it can also pick up some particulate matter and electrolytes from the air, although not much. It will be saturated with atmospheric CO2, so with a little buffering capacity, it will be at a pH of about 5.5, which is also the pH of carbonic acid, a weak acid. Hence rainwater is a weak acid.