Based on patterns in the periodic table, which list shows the acids in order from strongest to weakest? Review U4L7 p.8-9 (1 point) Responses H2S, PH3, HCl H2S, PH3, HCl PH3, H2S, HCl PH3, H2S, HCl HCl, H2S, PH3 HCl, H2S, PH3 HCl, PH3, H2S

Answer 1

To determine the order of the acids from strongest to weakest among HCl, H2S, and PH3, we can consider their acid dissociation in water and their respective strengths:

1. HCl (Hydrochloric acid): This is a strong acid, meaning it completely dissociates in water. It has a high tendency to donate protons (H+).
2. H2S (Hydrosulfuric acid): This is a weak acid, but it is stronger than PH3. It does not completely dissociate in water and has a lower tendency to donate protons.
3. PH3 (Phosphine): This is not typically classified as an acid in aqueous solutions; rather, it behaves as a weak Lewis base. Thus, it is weaker than both H2S and HCl in terms of acid strength.

Based on this information, the correct order from strongest to weakest acid is:

HCl, H2S, PH3

So the correct response is: HCl, H2S, PH3.