In the reaction
Ca(H2O)+2
6 + H2O !
Ca(H2O)5(OH)+ + H3O+
the calcium compound on the left acts accord-
ing to the Bronsted-Lowry theory as
1. a base.
2. an acid.
3. a salt.
4. a solvent.
acid
Doesn't the Ca(H2O)6+2 give a H^+ to the H2O on the left to form H3O^+ on the right. And something that donates a proton in the Bronsted-Lowry theory is a(an) (acid or base).
To determine how the calcium compound acts according to the Bronsted-Lowry theory, we need to understand the concepts of acids and bases in this theory. According to the Bronsted-Lowry theory, an acid is a substance that donates a proton (H+ ion), while a base is a substance that accepts a proton.
In the given reaction:
Ca(H2O)6 + H2O -> Ca(H2O)5(OH) + H3O+
The Ca(H2O)6 compound on the left donates a water molecule (H2O), which donates a proton (H+) to form H3O+ (hydronium ion) on the right side.
Since the Ca(H2O)6 compound donates a proton (H+), it is acting as an acid according to the Bronsted-Lowry theory.
Therefore, the correct answer is:
2. an acid.