Question

1. the solution in the beaker below has a ph of 7. which of the following diagrams correctly represents a solution with a ph less than 7? a. b. c. d.

Explanation:

Step1: Recall pH concept

A solution with pH less than 7 is acidic. In an acidic solution, the concentration of \(H^{+}\) ions is greater than the concentration of \(OH^{-}\) ions.

Step2: Analyze each option

• Option A: The number of \(H^{+}\) and \(OH^{-}\) ions seems to be relatively balanced.
• Option B: There are more \(H^{+}\) ions than \(OH^{-}\) ions.
• Option C: This represents a solution with \(H^{+}\) and \(Cl^{-}\) (an acid - base reaction product, but focus on ion concentration).
• Option D: There are more \(OH^{-}\) ions than \(H^{+}\) ions.

Since for a solution with pH less than 7 (acidic), \(H^{+}\) concentration > \(OH^{-}\) concentration, we look for the option with more \(H^{+}\) ions.

Answer:

B.