Questions: How is it known when the endpoint is reached? The indicator starts to faintly change color that quickly disappears. The indicator changes color and disappears slowly. The indicator has a faint color change that remains. The indicator has a huge color change that remains.

How is it known when the endpoint is reached?
The indicator starts to faintly change color that quickly disappears.
The indicator changes color and disappears slowly.
The indicator has a faint color change that remains.
The indicator has a huge color change that remains.

Transcript text: How is it known when the endpoint is reached? The indicator starts to faintly change color that quickly disappears. The indicator changes color and disappears slowly. The indicator has a faint color change that remains. The indicator has a huge color change that remains.

Solution

Solution Steps

Step 1: Understanding the Endpoint in Titration

In a titration, the endpoint is the point at which the reaction between the titrant and the analyte is complete. This is typically indicated by a color change in the indicator used.

Step 2: Analyzing the Options

Option 1: The indicator starts to faintly change color that quickly disappears.
This suggests a temporary change, which is not typical for an endpoint.
Option 2: The indicator changes color and disappears slowly.
This indicates a gradual change, which might not clearly signify the endpoint.
Option 3: The indicator has a faint color change that remains.
A faint change that remains could indicate the endpoint, but it might not be clear enough.
Option 4: The indicator has a huge color change that remains.
A significant and permanent color change is a clear indication of the endpoint.

Step 3: Selecting the Best Option

The most reliable indication of reaching the endpoint in a titration is a significant and permanent color change. This ensures that the endpoint is easily identifiable and not mistaken for a temporary or gradual change.