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What is the colour of phenolphthalein in aspirin solution?
The solution is colourless.
How do you test colourless solution?
To test a colorless solution, you can use chemical indicators or spectrophotometry. Chemical indicators can change color in the presence of specific substances, providing a visual indication of a reaction. Spectrophotometry measures the absorption or transmission of light by the solution at different wavelengths, allowing for the identification of compounds even if they are colorless.
How indicators works?
pH indicators change their color according to the pH of a solution.
What is the colour of phenolphthalein in salt water?
It will turn purple
What is natural indicators?
A natural indicator is a solution that changes colour at different pH levels, however these indicators are dissimialr to common indicators such as phenolphtalein as natural indicator solutions are dirived from chemicals from oragnic materials such as carrots, berries and beetroot
What do we call substances that change color depending on the pH the solution they are in?
Substances that change color depending on the pH of the solution they are in are called pH indicators. These indicators often undergo reversible color changes that are used to determine the acidity or alkalinity of a solution.
What is the colour of phenolphthalein in aspirin solution?
The solution is colourless.
How do I measure the pH of colourless solution?
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Dyes with pH sensitive colors are used as?
pH indicators in chemistry to determine the acidity or basicity of a solution. These dyes change color depending on the pH of the solution, making them useful for identifying pH levels in experiments or quality control.
How do you test colourless solution?
To test a colorless solution, you can use chemical indicators or spectrophotometry. Chemical indicators can change color in the presence of specific substances, providing a visual indication of a reaction. Spectrophotometry measures the absorption or transmission of light by the solution at different wavelengths, allowing for the identification of compounds even if they are colorless.
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.
What compound changes color when used to determine the pH of a substance?
There are a variety of indicators used to determine change in pH. Different indicators change during certain ranges of pH. For example, phenolphthalein turns from clear to pink in a basic solution (approximately 7.8 to 9). There are universal indicators that cover the whole pH scale.
How are indicators used to determine pH?
Indicators are substances that change color depending on the acidity or basicity of a solution. By adding an indicator to a solution of unknown pH and observing the color change, one can determine the approximate pH of the solution based on the color of the indicator at that pH range. This color change is due to the indicator's ability to undergo a reversible chemical reaction that is sensitive to changes in hydrogen ion concentration.
How can you tell if a colourless liquid is an acid or an alkali?
For an acid, the solution remains colourless or unchanged. For an alkali, it would turn fuschia.
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.
What color is when NaCl mixed with phenolphthaline?
Nothing it is colourless solution.
How can you found out if somthing is an indidcator?
if something is and indicator, then it will be able to proove to you wether a substance is acid or alkali. here are some common lab indicators used to determine the Ph value of some substances. remember, pH 1-6 is acid ph7 is neutral and pH 8-14 is alkali -Litmus paper is red in a neutral solution, red in an acid and blue in an alkaline solution -Universal indicator is is green in a neutral solution, red, orange or yellow in an acid and blue or violet in an alkali -Phenolpthalein is colourless in a neutral solution, colourless in an acid and pink inn an alkal -Screened methyl orange is orange in a neutral solution, red for pH below 3.6, orange for pH above 3.6 and yellow in an alkaline solution
