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Why phenolphthalein cannot be used as an indicator for titrating a weak base against a strong acid?
Phenolphthalein is not suitable for this titration because its color change occurs over a pH range that is beyond the equivalence point of the weak base and strong acid titration. At the equivalence point of this titration, the solution is acidic, which is below phenolphthalein's color change pH range. This can lead to inaccurate results and difficulty in determining the endpoint of the titration.
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Why potassium ferricyanide cannot be used as internal indicator?
Potassium ferricyanide cannot be used as an internal indicator because it is an external indicator that does not change color in response to pH changes in a solution. Internal indicators are usually weak organic acids or bases that change color due to ionization changes as the pH of the solution shifts.
Why can cabbage but not lettuce be used to create a pH indicator?
Cabbage contains a pigment called anthocyanin that changes color based on pH levels. Lettuce does not contain this pigment, so it cannot be used as a pH indicator.
How to standardize 0.1N NaoH?
Because NaOH is hygroscopic, meaning it absorbs water from the air, NaOH cannot be accurately weighed. To standardize 0.1 M NaOH, a solution is made to an approximate concentration of 0.1 M and then standardized by titrating an accurately weighed quantity of a primary standard.
What are the advantages of precipitation titration?
Some advantages of precipitation titration include its ability to measure ions that are present in low concentrations, its simplicity and cost-effectiveness compared to other titration methods, and its applicability to a wide range of compounds and sample types. Additionally, precipitation titration can be used for titrating mixtures of ions that cannot be easily separated for individual analysis.
Why can't a single indicator be used to tell the pH of a solution?
A single indicator cannot be used to accurately determine the pH of a solution because indicators change color over a range of pH values rather than at a specific pH. Different indicators have varying color changes at different pH ranges, so using multiple indicators or pH meters provides a more precise measure of the pH of a solution.
How do you turn water into wine using phenolphthalein?
Phenolphthalein is a pH indicator and cannot be used to turn water into wine. Wine is made through the process of fermentation using grapes or other fruits, yeast, and time. Phenolphthalein changes color in response to a change in pH, typically from colorless to pink or red in the presence of a base.
Can phenolphthalein pass through a cell membrane?
No, phenolphthalein cannot pass through a cell membrane on its own. It requires a carrier protein or a specific transport mechanism to facilitate its entry into a cell.
What are artificial indicator?
An artificial indicator is one that is chemically made and you cannot create from Natural Resources e.g. cabbage juice
Why potassium ferricyanide cannot be used as internal indicator?
Potassium ferricyanide cannot be used as an internal indicator because it is an external indicator that does not change color in response to pH changes in a solution. Internal indicators are usually weak organic acids or bases that change color due to ionization changes as the pH of the solution shifts.
When a charge is made against a parolee but the charge cannot be proven against the parolee and the parolee cannot disprove the charge can the charge still stand against the parolee?
In the U.S. YOU are not required to prove your own innocence. If a charge is made against you that cannot be substantiated - then the charge is baseless and 'goes away.'
You have an indicator light that keeps coming on and you don't know what it means?
As you do not describe in detail what the indicator light looks like, I cannot provide an answer. Remember a basic rule. Yellow means caution, and red means stop.
Why can cabbage but not lettuce be used to create a pH indicator?
Cabbage contains a pigment called anthocyanin that changes color based on pH levels. Lettuce does not contain this pigment, so it cannot be used as a pH indicator.
Can a trust with a taxpayer ID be levied by a judgment creditor?
Yes. If the creditor has won a judgment against the trust. It cannot be levied for a debt against the beneficiary as long as the trust is a valid trust.Yes. If the creditor has won a judgment against the trust. It cannot be levied for a debt against the beneficiary as long as the trust is a valid trust.Yes. If the creditor has won a judgment against the trust. It cannot be levied for a debt against the beneficiary as long as the trust is a valid trust.Yes. If the creditor has won a judgment against the trust. It cannot be levied for a debt against the beneficiary as long as the trust is a valid trust.
Can you block a creature with protection against your creatures?
No, you cannot block a creature with protection against your creatures.
Which president said a house divided against itself cannot stand?
Abraham Lincoln President said a house divided against itself cannot stand.
Can you own a squirral?
No, you cannot own a squirral. Its against the law.
Can you kill people in Poptropica?
No. You cannot. It is against the poptropica rules.
