• Question: Is dry HCL a solid or a gas?

    Asked by smithmoorebell to Ben, Clare, Ezzy, Mario, Sam on 13 Mar 2012.
    • Photo: Elizabeth Pearson

      Elizabeth Pearson answered on 12 Mar 2012:

      It’s a gas but it reacts with water really strongly to make hydrochloric acid. Even the water in the air is enough to do it.

    • Photo: Sam Vinko

      Sam Vinko answered on 13 Mar 2012:

      A very reactive gas – unless you cool it quite a lot, then it will most probably crystallise.