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Ethanolic NaOH is used instead of aqueous NaOH in titration to avoid side reactions with water and reduce error in the titration process. The absence of water in ethanolic NaOH helps maintain the concentration and stability of the solution, resulting in more accurate and precise titration results.
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Can you use indicator other than phenolphthalein in the titration of NaOH?
Yes, you can use indicators such as bromothymol blue or methyl orange in the titration of NaOH. These indicators change color at different pH ranges and can be used based on the specific pH endpoint needed for the titration.
What volume of NaOH was used in the titration?
To determine the volume of NaOH used in the titration, you need to know the concentration of the NaOH solution and the volume required to reach the endpoint. Use the formula: volume NaOH (L) = volume HCl (L) * concentration HCl / concentration NaOH.
How do you achieve accurate volume of NaOH during titration?
To achieve accurate volume of NaOH during titration, you should use a calibrated burette to deliver the NaOH solution, ensure the meniscus of the liquid is at eye level when taking readings, and record the volume added precisely at the endpoint of the titration when the indicator changes color. Practice consistent technique and avoid parallax errors for accurate volume measurements.
What is the concentration of the base (NaOH) in the following titration?
To determine the concentration of the base (NaOH) in a titration, you would use the volume of the base added and the volume and concentration of the acid (typically HCl). By using the balanced chemical equation and the volume and concentration of the acid, you can calculate the concentration of the base.
Which indicator would you use in the titration sulphuric acid with naoh?
In the titration of sulfuric acid with sodium hydroxide (NaOH), a pH indicator suitable for a strong acid-strong base titration, such as phenolphthalein, can be used. Phenolphthalein changes color at around pH 8.2-10, which is suitable for detecting the endpoint of the neutralization reaction between sulfuric acid and sodium hydroxide.
Can you use indicator other than phenolphthalein in the titration of NaOH?
Yes, you can use indicators such as bromothymol blue or methyl orange in the titration of NaOH. These indicators change color at different pH ranges and can be used based on the specific pH endpoint needed for the titration.
What volume of NaOH was used in the titration?
To determine the volume of NaOH used in the titration, you need to know the concentration of the NaOH solution and the volume required to reach the endpoint. Use the formula: volume NaOH (L) = volume HCl (L) * concentration HCl / concentration NaOH.
How do you achieve accurate volume of NaOH during titration?
To achieve accurate volume of NaOH during titration, you should use a calibrated burette to deliver the NaOH solution, ensure the meniscus of the liquid is at eye level when taking readings, and record the volume added precisely at the endpoint of the titration when the indicator changes color. Practice consistent technique and avoid parallax errors for accurate volume measurements.
What is the concentration of the base (NaOH) in the following titration?
To determine the concentration of the base (NaOH) in a titration, you would use the volume of the base added and the volume and concentration of the acid (typically HCl). By using the balanced chemical equation and the volume and concentration of the acid, you can calculate the concentration of the base.
How do you perform analytical method to measure HF content without the use of thorium nitrate?
Titration with NaOH, KOH, NH4OH, etc.
Which indicator would you use in the titration sulphuric acid with naoh?
In the titration of sulfuric acid with sodium hydroxide (NaOH), a pH indicator suitable for a strong acid-strong base titration, such as phenolphthalein, can be used. Phenolphthalein changes color at around pH 8.2-10, which is suitable for detecting the endpoint of the neutralization reaction between sulfuric acid and sodium hydroxide.
How can one standardize NaOH?
To standardize NaOH, one must titrate it against a known concentration of an acid, such as HCl, using an indicator to determine the endpoint of the reaction. The volume and concentration of the NaOH can then be calculated based on the volume of acid used in the titration. This process ensures that the concentration of the NaOH solution is accurately determined for future use in experiments.
Why use ethanolic KOH?
Ethanolic KOH (potassium hydroxide dissolved in ethanol) is commonly used in organic chemistry for reactions such as deprotonation or elimination. The use of ethanol as a solvent can help improve the solubility of the potassium hydroxide and increase reaction rates. Additionally, the ethanolic solution can be easier to handle and work with compared to solid KOH.
Why you use oxalate potassium in formol titration?
In formol titration, amino acids with formaldehyde are titrated with NaOH to measure the amount of amino acids in the solution. Potassium is also necessary for this titration and is supplied by using potassium oxalate. If calcium is present, it will react with the NaOH to form Ca(OH)2. This will make it appear to need more of the NaOH solution (and overestimate the titration). Potassium oxalate will chelate the calcium, and prevent it from reacting (forming calcium oxalate).
Can a beaker be used in a titration instead of an erlenmeyer flask?
Yes, a beaker can be used in a titration instead of an Erlenmeyer flask. However, beakers have a less precise shape compared to Erlenmeyer flasks, which can affect the accuracy of the titration results. It is recommended to use glassware with more precise measurements for titrations.
In which laboratory process could a student use 0.10 M NaOHaq to determine the concentration of an aqueous solution of HBr?
A student could use the 0.10 M NaOH solution in a titration experiment to determine the concentration of an aqueous solution of HBr by slowly adding the NaOH to the HBr solution until the equivalence point is reached. By monitoring the volume of NaOH required to neutralize the HBr solution, the student can calculate the concentration of the HBr solution using the equation C1V1 = C2V2, where C1 and V1 are the concentration and volume of NaOH and C2 and V2 are the concentration and volume of the HBr solution.
Why use h2so4 instead of hcl in titration of kmno4?
H2SO4 is typically used instead of HCl in the titration of KMnO4 because HCl can react with KMnO4 and form chlorine gas, which can interfere with the titration results. Additionally, H2SO4 provides the required acidic medium for the reaction to occur between KMnO4 and the analyte.
