Can it rain hydrochloric acid

Answer 1

It is theoretically possible, but highly unlikely. The Acid in the sky is likely to react with other air molecules, neutralizing it, and possibly creating weaker acids.

One would have to be on a planet where the natural atmosphere was already more acidic than hydrochloric acid.

Answer 2

No, it cannot rain hydrochloric acid because hydrochloric acid is a gas at room temperature and would not naturally occur in liquid form in the atmosphere. Rainwater is formed from the condensation of water vapor in the atmosphere.