A substance of Ka of 1 x 10^–5 would be classified as a ____.
A.strong acid
B.weak acid
C.strong base
D.weak base
I think it is B...?
I believe that you are correct.
Thank you
Yes, you are correct. A substance with a Ka (acid dissociation constant) value of 1 x 10^–5 would be classified as a weak acid (option B). This is because a weak acid has a lower Ka value compared to strong acids, which have larger Ka values.
To determine the classification of a substance based on its acid or base strength, we can look at its acid dissociation constant (Ka).
The Ka value represents the extent to which an acid donates protons (H+) in an aqueous solution.
A high Ka value indicates a strong acid, meaning it fully dissociates and donates a significant amount of hydrogen ions. On the other hand, a low Ka value indicates a weak acid, meaning it only partially dissociates and donates a small amount of hydrogen ions.
Given that the substance has a Ka of 1 x 10^–5, which is a relatively small value, we can conclude that it is a weak acid (choice B).