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MATERIALS AND SOLUTIONS
FAA (Formalin-Acetic-Alcohol) (100 ml)
Ethyl alcohol ------------------------------- 50 ml
Glacial acetic acid -------------------------- 5 ml
Formaldehyde (37-40%) ------------------- 10 ml
Distilled H2O ------------------------------- 35 ml
Mix them and shake well.
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How to prepare a standard solution of potassium iodate?
To prepare a standard solution of potassium iodate, you would need to weigh out a known quantity of potassium iodate, dissolve it in a known volume of water, and make up the solution to a specific volume using a volumetric flask. This process allows you to accurately determine the concentration of the solution.
Is it possible to prepare a standard NaOH solution by dissolving an accurate amount of NaOH pellets in a known volume of water?
Yes, it is possible to prepare a standard NaOH solution by dissolving an accurate amount of NaOH pellets in a known volume of water. This process allows for the calculation of the concentration of the NaOH solution based on the amount of NaOH used and the volume of water.
How can you prepare 1ppb from1000ppm sodium standard?
To prepare a 1 ppb sodium solution from a 1000 ppm sodium standard, you can dilute 1 mL of the 1000 ppm sodium standard with 999 mL (or 999 g) of solvent. This will result in a final solution with a concentration of 1 ppb, as 1 mL is equivalent to 1 mg in this case.
Is standard solution automated or manual?
Standard solutions can be either automated or manual. Automated standard solutions typically involve the use of laboratory equipment or instruments to prepare and dispense the solution, while manual standard solutions are prepared by hand using the appropriate equipment and techniques.
How do you prepare standard 0.1 N 100 ml Na2CO3 solution?
To prepare a 0.1 N 100 ml Na2CO3 solution, dissolve 5.3 grams of Na2CO3 in water and dilute to 100 ml. This will give you a solution with a concentration of 0.1 normal (N) for the 100 ml volume.
How do you prepare standard solution of salicylic acid for siderophore estimation?
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How to prepare a standard solution of potassium iodate?
To prepare a standard solution of potassium iodate, you would need to weigh out a known quantity of potassium iodate, dissolve it in a known volume of water, and make up the solution to a specific volume using a volumetric flask. This process allows you to accurately determine the concentration of the solution.
Is it possible to prepare a standard NaOH solution by dissolving an accurate amount of NaOH pellets in a known volume of water?
Yes, it is possible to prepare a standard NaOH solution by dissolving an accurate amount of NaOH pellets in a known volume of water. This process allows for the calculation of the concentration of the NaOH solution based on the amount of NaOH used and the volume of water.
How do you prepare Silica standard from Silicon standard solution?
To prepare a silica standard from a silicon standard solution, first, determine the desired concentration of silica needed. Then, use a suitable chemical method, such as acid digestion, to convert the silicon in the solution to silica, typically by adding an acid like hydrochloric acid to dissolve the silicon. After digestion, neutralize the solution if necessary and dilute it to the desired concentration using deionized water. Finally, ensure thorough mixing and proper labeling for future use.
How can you prepare 1ppb from1000ppm sodium standard?
To prepare a 1 ppb sodium solution from a 1000 ppm sodium standard, you can dilute 1 mL of the 1000 ppm sodium standard with 999 mL (or 999 g) of solvent. This will result in a final solution with a concentration of 1 ppb, as 1 mL is equivalent to 1 mg in this case.
What is the minium purity of a substance used to prepare a primary standard?
The minimum purity of a substance used to prepare a primary standard should be at least 99.8% to ensure accuracy and reliability of the standard solution. Impurities in the substance can lead to errors in the final concentration calculations.
Is standard solution automated or manual?
Standard solutions can be either automated or manual. Automated standard solutions typically involve the use of laboratory equipment or instruments to prepare and dispense the solution, while manual standard solutions are prepared by hand using the appropriate equipment and techniques.
How do you prepare standard 0.1 N 100 ml Na2CO3 solution?
To prepare a 0.1 N 100 ml Na2CO3 solution, dissolve 5.3 grams of Na2CO3 in water and dilute to 100 ml. This will give you a solution with a concentration of 0.1 normal (N) for the 100 ml volume.
How do you prepare a standard dissolved oxygen solution?
To prepare a standard dissolved oxygen solution, you would typically use sodium sulfite as a reducing agent to remove oxygen from water and create an oxygen-free solution. You would then saturate the deoxygenated water with pure oxygen gas to a known concentration until it reaches equilibrium. This process allows you to create a standardized solution for calibrating dissolved oxygen measurement instruments.
What is the name for a conical glass flask with a narrow neck and broad base?
Volumetric flask - used to prepare a standard solution in laboratory
How do you prepare standard for total soluble sugar?
To prepare a standard for total soluble sugar, dissolve a known weight of a pure sugar (such as sucrose) in a specific volume of distilled water to create a concentrated solution. For example, dissolve 10 grams of sucrose in 100 milliliters of water to create a 10% (w/v) solution. Mix thoroughly to ensure complete dissolution, and further dilute this solution to desired concentrations for calibration purposes in your analysis. Store the standard solution in a tightly sealed container, protected from light, to maintain its stability.
Why is it advisable to prepare a slightly more concentrated solution of potassium permanganate when preparing its standard solution?
Preparing a slightly more concentrated solution of potassium permanganate for a standard solution ensures higher accuracy in the volumetric analysis. This allows for more precise measurements and reduces errors in the dilution process. Additionally, a concentrated solution is more stable and less prone to degradation over time, ensuring the standard solution remains reliable for a longer period.
