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How are pH indicators classified?
pH indicators are classified based on the pH range over which they change color. They can be classified as either acidic, basic, or universal indicators. Acidic indicators change color in acidic solutions, basic indicators change color in basic solutions, and universal indicators change color over a wide pH range.
How indicators works?
pH indicators change their color according to the pH of a solution.
What is the name of the indicator that gives you the range of colours for different pH numbers?
The indicator that gives you the range of colors for different pH numbers is called universal indicator. It is a mixture of several indicators that changes color over a wide pH range.
Why do you need many different indicators to span the entire pH spectrum?
Different pH indicators have varying color change ranges and pH sensitivity, which makes it essential to use multiple indicators to effectively cover the entire pH spectrum. Each indicator undergoes a color transition at a specific pH range, so a single indicator cannot accurately signal changes across the entire scale. For instance, some indicators work well in acidic conditions while others are better suited for neutral or basic environments. Using a variety of indicators ensures precise monitoring of pH in diverse chemical and biological systems.
What has the ability to indicate a full range of pH values by colour change?
A pH indicator has the ability to indicate a full range of pH values by changing color. These indicators, such as litmus paper or phenolphthalein, react with hydrogen ions in a solution, resulting in a visible color change that corresponds to the acidity or alkalinity of the solution. Each indicator has a specific pH range over which it changes color, allowing for a visual assessment of pH levels.
How are pH indicators classified?
pH indicators are classified based on the pH range over which they change color. They can be classified as either acidic, basic, or universal indicators. Acidic indicators change color in acidic solutions, basic indicators change color in basic solutions, and universal indicators change color over a wide pH range.
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 indicators works?
pH indicators change their color according to the pH of a solution.
What is the name of the indicator that gives you the range of colours for different pH numbers?
The indicator that gives you the range of colors for different pH numbers is called universal indicator. It is a mixture of several indicators that changes color over a wide pH range.
How many types of indictors are used in titration?
There are two main types of indicators used in titration: color indicators and pH indicators. Color indicators change color at specific pH ranges to indicate the endpoint of the titration, while pH indicators change color based on the pH of the solution.
Why do you need many different indicators to span the entire pH spectrum?
Different pH indicators have varying color change ranges and pH sensitivity, which makes it essential to use multiple indicators to effectively cover the entire pH spectrum. Each indicator undergoes a color transition at a specific pH range, so a single indicator cannot accurately signal changes across the entire scale. For instance, some indicators work well in acidic conditions while others are better suited for neutral or basic environments. Using a variety of indicators ensures precise monitoring of pH in diverse chemical and biological systems.
What kind of indicators are used in precipitation titration?
Indicators used in precipitation titrations are typically complexometric indicators that form colored complexes with the analyte ions. These indicators change color when the endpoint of the titration is reached, signaling the completion of the precipitation reaction. Common complexometric indicators include EDTA, Eriochrome Black T, and Calconcarboxylic acid.
How do use solutions to find the colors of the indicators?
First, identify the indicators used in the experiment. Then, prepare a set of solutions with known colors at different pH levels. Finally, compare the color change of the indicators with the color changes in the solutions to determine the pH of the solution being tested.
Why is phenolphthalein indicator not used in EDTA titration?
Phenolphthalein is not suitable for use in EDTA titration because it changes color at a pH range that is much lower than the pH range at which the EDTA-metal complex formation occurs. EDTA titration typically requires indicators that change color in a more acidic pH range.
What are the advantages of natural indicators?
natural indicators are cheap, while universal indicators are hard to obtain.
What is the pH value of universal indicator?
When it is not mixed with any other solution, it is green. Green represents neutrality, so its pH is 7.
What is acid-base indicators?
These indicators change the color depending on the pH of the solution.
