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What is the initial pH of the solution in the Erlenmeyer flask?
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∙ 13y ago
Q. needs more information on: WHAT is in solution, and at WHAT concentration
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∙ 13y ago
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What use of erlen meyer flask?
an erlenmayer or what we called erlen in French is a material useful in chemistry .commonly known in English as a conical flask or E-flask, is a widely used type of laboratory flask which features a conical base and a cylindrical neck. They are usually marked on the side to indicate the approximate volume of their contents. It is named after the German chemist Emil Erlenmeyer, who created it in 1861.Erlenmeyer flasks are used for pH titrations and in microbiology for the preparation of microbial cultures.
What is amount of caustic required to adjust pH of solution?
This depends on the desired pH, volume of solution, initial pH, etc.
What would happen to the overall pH if you dumped a strong acid into a solution that was slightly alkaline?
The final pH of the mixture will depend on how much of the strong acid you add. The initial amount of acid will neutralize the alkaline solution, and if there is enough of the strong acid, the final pH will then become acidic, i.e. pH < 7.
How you classify the solution as a best buffer solution?
A buffer solution is one involving a weak base/weak acid with its conjugate acid/base. In a buffer solution, the pH must be changed to only a small amount. Thus, any solution with a STRONG acid or a STRONG base is not a successful buffer solution because there would be a relatively large change in the initial pH.
How does pH value of solution help to predict nature of solution?
An acidic solution has a pH under 7 and a basic solution has a pH over 7.
What is the use and definition of an Erlenmeyer flask?
The triangular shape of the Erlenmeyer flask aids in the mixing of the liquid inside. When you swirl the flask, the liquid moves up the sides without coming out the top. They are used in applications where solutions must be mixed multiple times. When doing a titration analysis, small amounts of reactant are added to a solution, usually until an indicator changes color, and the solution must be mixed after every addition. When making a dilution of a stock solution, the easiest way is to add a measured amount of stock to a measured amount of solvent in an Erlenmeyer and swirl to ensure thorough mixing. Erlenmeyer flasks are often used to heat liquids with a Bunsen burner. For that purpose, the flask is usually placed on a ring held to a ring stand by means of a ring clamp. A wire gauze mesh or pad is usually placed between the ring and the flask.
What use of erlen meyer flask?
an erlenmayer or what we called erlen in French is a material useful in chemistry .commonly known in English as a conical flask or E-flask, is a widely used type of laboratory flask which features a conical base and a cylindrical neck. They are usually marked on the side to indicate the approximate volume of their contents. It is named after the German chemist Emil Erlenmeyer, who created it in 1861.Erlenmeyer flasks are used for pH titrations and in microbiology for the preparation of microbial cultures.
What is amount of caustic required to adjust pH of solution?
This depends on the desired pH, volume of solution, initial pH, etc.
Why the titration process should be done drop by drop?
Around the expected equivalence point of the titration, you need to drop the solution very slowly and mix the solutions very well because, around the equivalence point, just one drop of solution from the buret can make a radical pH change in the mixed solution. If the color of the solution in the erlenmeyer flask changes, record the volume of the solution in the buret and add a few drops of the solution to make sure the the equivalence point you found is correct.
What is the use of a erlenmeyer flask?
Erlenmeyers are used in chemistry labs for titration, e.g. for pH, as they can be held and the contents mixed single-handed leaving the other hand free to add reagent. Erlenmeyer flasks are suitable for heating liquids, e.g. with a Bunsen burner. The flask is usually placed on a ring held to a ring stand by means of a ring clamp. A wire gauze mesh or pad is usually placed between the ring and the flask to prevent the flames from directly touching the glass in the same manner as for a beaker. When heating (or cooling) in a water bath the flask can be clamped by the neck to a stand or a hooped weight may be placed over the conical part of the flask to prevent it from floating in the bath. Erlenmeyers are also used in microbiology for the preparation of microbial cultures. Plastic Erlenmeyer flasks used in cell culture are pre-sterilized and feature closures and vented closures to enhance gas exchange during incubation and shaking.
What is a uses of Erlenmeyer flask?
Erlenmeyers are used in chemistry labs for titration, e.g. for pH, as they can be held and the contents mixed single-handed leaving the other hand free to add reagent. Erlenmeyer flasks are suitable for heating liquids, e.g. with a Bunsen burner. The flask is usually placed on a ring held to a ring stand by means of a ring clamp. A wire gauze mesh or pad is usually placed between the ring and the flask to prevent the flames from directly touching the glass in the same manner as for a beaker. When heating (or cooling) in a water bath the flask can be clamped by the neck to a stand or a hooped weight may be placed over the conical part of the flask to prevent it from floating in the bath. Erlenmeyers are also used in microbiology for the preparation of microbial cultures. Plastic Erlenmeyer flasks used in cell culture are pre-sterilized and feature closures and vented closures to enhance gas exchange during incubation and shaking.
End point of titration should be at pH?
A titration usually has an acid (pH 0-6) in the burette and an alkali (pH 8-14) in the conical flask below the burette. Your aim is to neutralise the two solutions by titrating them against each other.So the endpoint pH should be 7 (universal indicator/litmus paper will appear a greenish colour). The solution in the conical flask is neutral.Hope this Helps!
What would happen to the overall pH if you dumped a strong acid into a solution that was slightly alkaline?
The final pH of the mixture will depend on how much of the strong acid you add. The initial amount of acid will neutralize the alkaline solution, and if there is enough of the strong acid, the final pH will then become acidic, i.e. pH < 7.
What would be the pH of a neutral solution An acid solution A basic solution?
Neutral solution: pH =7Acidic solution: pH7.
How does a solution with a pH of 7 compare to a solution with a pH of 9?
A solution with a pH of 7 compared to a solution with a pH of 9 would be more acidic.
An unknown substance is added to a solution and the pH increases The substance is best described as what?
The unknown substance would have to be a basic solution. At least more basic than the initial solution. The pH scale ranges from 0,Most acidic, to 14, Most Basic. If the pH of your solution increases when the unknown substance is added, then it would lead you to believe that the added substance is of a basic nature.
What would be expected when sodium hydroxide solution is added gradually to a conical flask of dilute nitric acid containing universal indicator?
The indicator would show a rising pH.
