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To prepare a 1% phenolphthalein solution in 2000mL, you would need to dissolve 20g of phenolphthalein in 2000mL of solvent (usually water or alcohol). This will result in a 1% solution by weight/volume. Remember to wear appropriate personal protective equipment and handle chemicals with care.
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What is phenolphthalein molecular weight?
The molecular weight of phenolphthalein is approximately 318.28 g/mol.
How do you prepare phenolphthalein indicator for titration?
To prepare phenolphthalein indicator for titration, dissolve phenolphthalein powder in ethanol or a 1:1 mixture of ethanol and water to make a concentration of around 1% w/v. This solution can then be added dropwise to the titration flask to detect the endpoint of the titration based on the color change.
What does Phenolphthalein indicate?
Phenolphthalein is a pH indicator used in acid-base titrations. It changes color from colorless to pink as the pH of the solution goes from acidic to alkaline. It is commonly used to determine the endpoint of titrations involving strong acids and strong bases.
How much phenolphthalein indicator should be used?
Typically, 1-2 drops of phenolphthalein indicator are sufficient to use in an acid-base titration experiment. It is important not to use too much indicator, as it can affect the accuracy of the titration results.
How will you prepare 1 percent naoh?
To prepare a 1% NaOH solution, you can mix 1 part of NaOH (sodium hydroxide) with 99 parts of water by weight. For example, to prepare 100 mL of 1% NaOH solution, you would dissolve 1 gram of NaOH in 99 grams of water. Remember to always add NaOH to water slowly while stirring to avoid splattering and heat generation.
How much is one third of two liters?
2 liters=2000ml so: 2000ml/3=667ml Therefore 1/3 of 2L is 667mililiters.
Preparation of 1 percent agarose gel or How to prepare 1 percent agarose gel?
Check the answer for How do you make an electrophoresis gel?
What percentage of 2litres is 400ml?
2000ml(2l)÷400=5. 400 is 100 percent. 100x5= 500 percent.
How do you make 1 solution phenolphthalein?
To make a 1% solution of phenolphthalein, you would typically dissolve 1g of phenolphthalein in 100mL of a suitable solvent, such as ethanol or water. Mix well until the phenolphthalein is fully dissolved to obtain the desired concentration.
How do you make phenophtalene indicator from the powder?
1. - Weigh out 0.5 g of phenolphthalein. 2. - Prepare a 50% ethanol (ethyl alcohol) solution consisting of 50ml ethanol and 50 ml water. 3. - Dissolve the phenolphthalein thoroughly in the 50% ethanol solution. 4. - Use from a bottle fitted with an eye dropper. Store the rest in a stoppered bottle.
How many ml are needed to prepare 1 liter of 2.5 percent dextrose solution?
25
What is 2000ml?
2 ltersThere are 1000 milliliters in 1 liter. One milliliter is 0.001 liter.
How do you prepare 1 percent gentian violet?
1) take 10gm of gentian violet. then add to them: 2) Alcohol 70% ( H2O).... to 1000 ml
How many grams of a drug must be used to prepare 5000 milliliters of a 1 percent solution?
You need 50 g of this drug.
How many grams of hydrocortisone powder should be used to prepare 1 pound of a 25 percent hydrocortisone cream?
120 g
What is phenolphthalein molecular weight?
The molecular weight of phenolphthalein is approximately 318.28 g/mol.
How many milliliter in two liters?
2000ml = 2L. A Milliliter is 1000th of a Litre.
