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What can do NaOH use as primary standard?
Sodium hydroxide easily absorb water and carbon dioxide.
Is hcl a primary standard or a secoundary standard?
HCl is not typically used as a primary standard because it is difficult to obtain in a pure solid form. Instead, it is usually standardized against a primary standard such as potassium hydrogen phthalate (KHP) or sodium carbonate.
Is k2cro4 a primary or secondary standard and why?
K2CrO4 is a secondary standard. This is because it is not directly titrated against a primary standard but rather is standardized by titration against a primary standard, such as sodium thiosulfate in iodometric titrations.
What primary standard is used to titrate against hydrochloric acid?
Sodium carbonate (Na2CO3) is a common primary standard used to titrate against hydrochloric acid due to its high purity, stable nature, and the ability to accurately determine the concentration of the acid based on the stoichiometry of the reaction.
Why is potassium permanganate not used as a primary standard?
Potassium permanganate is not used as a primary standard because it is hygroscopic, meaning it readily absorbs water from the atmosphere, leading to inaccuracies in measurements. Additionally, its high reactivity with organic compounds can cause side reactions, affecting the accuracy of the titration results. Finally, potassium permanganate has multiple oxidation states, making it difficult to determine its exact concentration in a solution, further limiting its suitability as a primary standard.
Which other primary standard can be used to standardize sodium hydroxide other than KHP?
sodium hydroxide is a secondary standard because it absorb the moisture from the air and its concentration will change
What can do NaOH use as primary standard?
Sodium hydroxide easily absorb water and carbon dioxide.
advantage of KIO3 as a primary standard?
what is the advantage of potassium iodate as aprimary standard
Is hcl a primary standard or a secoundary standard?
HCl is not typically used as a primary standard because it is difficult to obtain in a pure solid form. Instead, it is usually standardized against a primary standard such as potassium hydrogen phthalate (KHP) or sodium carbonate.
Does potassium a primary standard substance?
- dipotassium hydrogen phosphate is used to prepare buffers - for chemical analysis by spectrometry standard solutions of potassium exist
Is k2cro4 a primary or secondary standard and why?
K2CrO4 is a secondary standard. This is because it is not directly titrated against a primary standard but rather is standardized by titration against a primary standard, such as sodium thiosulfate in iodometric titrations.
Why iodine is not directly employed as the primary standard?
Iodine is not directly employed as a primary standard because it is less stable in solution compared to other primary standards like potassium dichromate or potassium permanganate. Additionally, iodine is sensitive to light and air, leading to potential degradation and affecting its accuracy as a primary standard.
What is the structural formula for potassium hydrogen phthalate?
Potassium Hyrdogen Phthalate can be written as KHP.The balanced equation for Potassium hydrogen phthalate and calcium hydroxide is:2KHC8H4O41- (aq) + Ca(OH)2 (aq) -----> Ca2+ (aq) + 2KC8H4O41- (aq) + 2H2O
What primary standard is used to titrate against hydrochloric acid?
Sodium carbonate (Na2CO3) is a common primary standard used to titrate against hydrochloric acid due to its high purity, stable nature, and the ability to accurately determine the concentration of the acid based on the stoichiometry of the reaction.
Why is potassium permanganate not used as a primary standard?
Potassium permanganate is not used as a primary standard because it is hygroscopic, meaning it readily absorbs water from the atmosphere, leading to inaccuracies in measurements. Additionally, its high reactivity with organic compounds can cause side reactions, affecting the accuracy of the titration results. Finally, potassium permanganate has multiple oxidation states, making it difficult to determine its exact concentration in a solution, further limiting its suitability as a primary standard.
Why kmno4 is a secondary standard?
Well, hello there, friend! Potassium permanganate (KMnO4) is often used as a secondary standard because it can be easily prepared to a high level of purity. Its rich purple color makes it easy to spot the endpoint of a titration, which is quite handy in the lab. Just like a happy little tree in a painting, KMnO4 brings a sense of reliability and consistency to chemical analysis.
Why sodium hydroxide is not a suitable regent to prepare a primary standard solution?
Sodium hydroxide is hygroscopic, meaning it easily absorbs moisture from the atmosphere, which can lead to inaccurate concentration measurements. It is also prone to reacting with carbon dioxide in the air, affecting its purity. Additionally, due to its strong caustic nature, it can be hazardous to handle during preparation of primary standard solutions.
