Question

when using a ph meter to monitor a stirring reaction mixture, where should you place the ph sensor electrode? select one: between the stirring vortex and the side of the glassware along the edge of the glassware suspended above the reaction mixture in the middle of the stirring vortex of the solution

Explanation:

When using a pH - meter to monitor a stirring reaction mixture, placing the pH sensor electrode between the stirring vortex and the side of the glassware ensures accurate measurement. Placing it along the edge may give a non - representative reading due to boundary effects. Suspending it above the mixture won't measure the solution's pH. Placing it in the middle of the vortex can cause mechanical damage to the electrode and may not give a stable reading due to high turbulence.

Answer:

A. Between the stirring vortex and the side of the glassware