which of the following indicators would show an intermediate endpoint of color of orange: bromocresol green, methyl red, phenolphthalein or methyl violet?
No clue how to do this. And what does it mean to show an intermediate endpoint. Please help
I would google each and read the details. I'm not sure what "intermediate endpoint" refers to either but I'm inclined to think it means "the end point color". Methyl orange is red in acid and yellow in base and orange at the endpoint. My quick hunch is that's the answer. Phenolphthalein is colorless to pink with no orange between. The others are a distinctcolor in acid/base form and have no orange anywhere between. The more I think about it the mpore I believe "intermediate endpoint of color" means "endpoint color".
Okay thank you so much. And yup you're right, methyl red is red is the only possible indicator. And yup that makes sense!
To determine which indicator shows an intermediate endpoint of orange color, we need to understand what an intermediate endpoint means. In a titration, an endpoint refers to the point at which the reaction is complete. An indicator is a substance that changes color depending on the pH of the solution it is in. An intermediate endpoint refers to a color change that occurs between the starting color of the indicator and its final color.
Out of the indicators mentioned (bromocresol green, methyl red, phenolphthalein, and methyl violet), the most likely indicator to show an intermediate endpoint of orange color is phenolphthalein. This indicator typically changes from colorless to pink as the pH increases from acidic to basic. However, it should be noted that phenolphthalein is usually used for acid-base titrations and may not provide an orange color. Since the other indicators mentioned do not commonly exhibit an orange color at any stage of the titration, phenolphthalein is the most appropriate choice.
It is important to consult specific references or experiment protocols to verify the behavior of indicators in particular titrations.
To determine which indicator shows an intermediate endpoint of the color orange, we first need to understand what an intermediate endpoint means in the context of indicators.
Indicators are substances that undergo a color change in response to changes in pH, which is a measure of how acidic or basic a solution is. The color change occurs when the indicator reaches a specific pH value, known as the endpoint. An intermediate endpoint refers to the pH range where the color change is between two specific colors, indicating that the solution is transitioning from one color to another.
Now, let's examine the indicators provided and determine which one exhibits an intermediate endpoint of orange:
1. Bromocresol Green: This indicator transitions from yellow to blue as the pH changes. It does not have an intermediate endpoint of orange.
2. Methyl Red: This indicator transitions from red to yellow as the pH changes. It also does not have an intermediate endpoint of orange.
3. Phenolphthalein: This indicator transitions from colorless to pink as the pH changes. It does not show an intermediate endpoint of orange.
4. Methyl Violet: This indicator transitions from yellow to violet as the pH changes. However, it does not have an intermediate endpoint of orange.
Therefore, none of the listed indicators - bromocresol green, methyl red, phenolphthalein, or methyl violet - exhibit an intermediate endpoint of orange.