Chapter 19, Problem 13STP

Interpretation Introduction

Interpretation : The number of strong acids is to be identified.

Concept Introduction : Acids are substances that contain hydrogen and ionize to produce hydrogen ions $\left({\text{H}}^{\text{+}}\right)$ in an aqueous solution.

Answer to Problem 13STP

Only B is a strong acid.

Explanation of Solution

Strong acids totally dissociate, therefore there are no undissociated acid molecules in their solutions.

However, weaker acids only dissolve partially, thus their solutions still include some undissociated species.

As can be seen from the illustration, only acid B is a strong acid because all other acids have been dissociated into their conjugate bases.

The product’s picture contains no undissolved acid at all.