Chemistry

HCN is mixed with water. Which is the best
description of what you would expect to find
in the solution?
1. CN−, OH−, and water molecules
2. HCN molecules, H3O+, CN1−, and water
molecules
3. H2CN+, OH−, and water molecules
4. H3O+, CN−, and water molecules
5. CN+, OH−, and water molecules
6. HCN molecules and water molecules

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  1. HCN is a weak acid.
    HCN + H2O <==> H3O^+ + CN^-
    This equation tells you what is there. Note the arrow is a double one, the reaction in an equilibrium with some of both sides at equilibrium.

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