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In H2S determination with iodometry (by iodine and thiosulfate - and H2s dissolved in Borax) why we add HCl to iodine before adding borax?
HCl is added to iodine in the iodometric determination of H2S to ensure that the iodine is in an acidic medium, which helps to prevent the formation of iodine complexes that could interfere with the reaction. The acidification promotes the conversion of H2S to the more easily oxidized species, allowing for a more accurate measurement of H2S concentration. Additionally, the acidic environment aids in the proper dissolution of iodine, ensuring that it reacts effectively with any H2S present in the sample.
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Why the NaOH solution is heated before adding BaCl2 in the two solutions method for determination of purity of NaOH sample?
Why the NaOH is heated before adding in BaCl2 for determination of purity of NaOH sample?
Is saturated a soulution that contains all solute and can be dissolved with out changing temperature?
A saturated solution contains the maximum amount of solute that can be dissolved at a given temperature. If a solution is saturated, adding more solute will not dissolve into the solution without changing the temperature.
How is the dissolving process of solutions like the kinetic molecular theory?
The kinetic molecular theory explains the dissolution that is the process by which a solute forms a solution in a solvent.It could be dissolved by adding Ionic compounds.
Why does the temperature of tea decreases on adding sugar?
Adding sugar to tea causes the temperature to decrease because energy is required to break down the sugar crystals into individual molecules. This energy is taken from the surrounding tea, resulting in a decrease in temperature.
If solid sodium hydroxide were added to neutralize the HCl would this reverse the reaction and cause the sodium chloride to redissolve?
No, adding solid sodium hydroxide to neutralize hydrochloric acid (HCl) would not cause sodium chloride to redissolve. The reaction between sodium hydroxide and hydrochloric acid forms water and sodium chloride, which remains in its dissolved form. The addition of solid sodium hydroxide would simply further neutralize the acid and increase the concentration of the resulting sodium chloride solution.
Why is ammonium thiocyanate used in iodometry of copper?
Ammonium thiocyanate is used as an indicator in the iodometry of copper because it forms a red complex with copper ions. By adding ammonium thiocyanate to the copper solution, the color change from white to red indicates the end point of the titration, allowing for the determination of copper concentration.
What is the function of the sodium thiosulfate in studying the kinetics?
Sodium thiosulfate is used in studying reaction kinetics because it can react with iodine, which is often used to determine reaction rates. By adding sodium thiosulfate, it can help to accurately measure the time it takes for a reaction to occur by reacting with any excess iodine present. This allows for the determination of reaction rates and the study of reaction mechanisms.
How is used Sodium thiosulfate in chlorine removal shampoo?
Sodium thiosulfate is used in chlorine removal shampoos because it has a chemical property that allows it to neutralize chlorine. Chlorine can damage hair by stripping it of its natural oils and causing dryness. By adding sodium thiosulfate to shampoo, it can help to break down and remove chlorine from the hair, leaving it clean and less damaged.
Why does water go cold when you add sodium thiosulfate crystals to it?
Adding sodium thiosulfate crystals to water causes an endothermic reaction, meaning it absorbs heat from the surrounding environment. As a result, the water temperature decreases, making it go cold.
What is the procedure for the standardization of sodium thiosulfate?
Thiosulfate can be standardised by adding excess potassium iodide solution to a known volume of a standard acidified solution of potassium dichromate, and then titrating the liberated iodine against the sodium thiosulfate solution.http://www.meduniv.lviv.ua/files/kafedry/tokshim/English/Analytical/Manuals_Analytchem/Iodometry.pdf
Why the NaOH solution is heated before adding BaCl2 in the two solutions method for determination of purity of NaOH sample?
Why the NaOH is heated before adding in BaCl2 for determination of purity of NaOH sample?
Leach compound for gold using sodium thiosulfate on black sand?
Sodium thiosulfate can be used to leach gold from black sand by creating a solution with the black sand and then adding sodium thiosulfate to dissolve the gold. The gold can be recovered from the solution using various methods such as precipitation or activated carbon adsorption. It is important to follow proper safety precautions and environmental regulations when working with chemicals for gold extraction.
What is the purpose of adding MnSO4 in Winkler's methode?
determine the dissolved oxygen(BOD).iodometryMnSO4+Na2CO3
Why is sodium thiosulfate being put in microbiological water containers?
Sodium thiosulphate neutralises chlorine, so preventing further bactericidal effects on organisms in the water during transit to the laboratory. (ie. results of analysis will be representative of sample at time of sampling.)
What is the effect of adding sulfuric acid in iodimetry titration?
Adding sulfuric acid in iodimetry titration helps to oxidize iodide ions to iodine, which is then titrated with a standard solution of sodium thiosulfate. Sulfuric acid also prevents the interference of other reducing agents that may be present in the sample being tested.
Does the water level rises when sugar is dissolved in water?
Adding matter to matter with always increase overall volume
How do you reduce bromine level in a pool?
To reduce bromine levels in a pool, you can dilute the water by adding fresh water. Alternatively, you can neutralize the excess bromine by adding sodium thiosulfate or a non-chlorine shock treatment. It's important to retest the water after making adjustments to ensure the bromine levels are within the recommended range.
