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Can you have viva questions on titration?
Yes, it is possible to have viva questions on titration. Some potential questions could focus on the principles of titration, the choice of indicators, calculations involved in titration, different types of titrations, sources of errors in titration, and applications of titration in various industries.
Why use sodium bicarbonate in iodometric titration?
Sodium bicarbonate is used in iodometric titration to react with excess iodine that may be present after the reaction with the analyte. This helps neutralize the solution and prevent any further reactions that could interfere with the titration endpoint. Additionally, sodium bicarbonate helps stabilize the pH of the solution during the titration process.
Why amnomiun thiocyanate is added in the titration of sodium thiosulphate with copper?
Ammonium thiocyanate is added in the titration of sodium thiosulphate with copper to detect the end point of the reaction. When all the thiosulfate ions react with copper ions, excess copper ions will react with ammonium thiocyanate forming a reddish-brown complex. This color change indicates that all the thiosulfate has reacted and the titration is complete.
Why is sodium thiosulphate used in iodometric titration?
· In analytical chemistry, sodium thiosulphate is used for the determination of the strength of a given solution of iodine. · Sodium thiosulphate is preferred in iodometric analysis due to the fact that sodium thiosulphate is oxidized by iodine. It is also used to determine the strength of many oxidizing agents.
How does sodium carbonate and sodium bicarbonate react during titration?
When sodium carbonate and sodium bicarbonate are titrated together, the sodium carbonate will react with the acid first due to its higher alkalinity compared to sodium bicarbonate. The sodium bicarbonate will then react next, producing carbon dioxide gas as a byproduct due to its weaker alkalinity. This reaction can be observed by the effervescence or bubbling of carbon dioxide gas during the titration.
Why thiosulphate titration is called as redox titration?
A thiosulfate titration is mostly carried out to determine the amount of iodine present in the solution. In these reactions, thiosulfate ion acts as the reducing agent. This types titrations are often called as 'iodometric titrations'.
What is the use of Sodium thiosulphate in iodometry?
In iodometry sodium thiosulphate is used because it is standardized by potassium dichromate and it is the best and relaible way to standardized sodium thiosulphate using iodometric titration. Infact sodium thiosulphate is also standardized by iodimetry. The difference between both of them is only of iodine. In iodometry iodine gas is liberated that will further react with sodium thiosulphate but in iodimetry standard solution of iodine is used.
Is sodium thiosulphate a reactant?
Yes, sodium thiosulfate can be a reactant in chemical reactions, such as in photography as a fixing agent or in medical treatments for cyanide poisoning. It can also be used in measuring the concentration of other substances through titration reactions.
What is the balanced chemical equation for the peroxide value?
KI + CH3COOH --> HI + CH3COO-K+ ROOH + 2HI --> ROH + H2O + I2 TITRATION WITH SODIUM THIOSULPHATE TO DERIVE THE PEROXIDE VALUE 2NA2S2O3 + I2 (PURPLE) --> NA2S4O6 + NaI (COLOURLESS)
Why pottasium chromate is used as indicator in argentometric titration?
Potassium chromate is used as an indicator in argentometric titrations because it forms a red precipitate (silver chromate) in the presence of excess silver ions. This color change signals the end point of the titration, where all the chloride ions have reacted with silver ions. This makes it easy to visually detect when the reaction is complete.
What are the conclusions of redox titration using sodium thiosulphate?
The conclusions of a redox titration using sodium thiosulfate typically involve determining the concentration of the analyte (usually an oxidizing agent) in the sample. By measuring the volume of thiosulfate solution required to completely react with the analyte, one can calculate the concentration of the analyte present in the sample. This information can be used to quantify the amount of the oxidizing agent in the sample.
What is the role of sodium bicarbonate in a redox reaction?
With an acid (commonly used: acetic) CO2 is formed so oxygen from air is excluded in the oxidimetric titration reaction. It otherwise might interfere with the titrant.
