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Iodine is not considered a primary standard because it can undergo sublimation (solid to gas phase transition) and has a limited solubility in water, which can lead to inaccuracies in volumetric analyses. Additionally, iodine can react slowly over time with air and other compounds, affecting its stability and reliability as a primary standard.
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Is borax a primary standard?
No, borax is not considered a primary standard. Primary standards are highly pure reagents that can be used to standardize solutions for volumetric analysis, while borax is typically used as a secondary standard for acid-base titrations.
Is disodium salt considered as a primary standard?
No, disodium salt is not typically considered a primary standard in analytical chemistry. Primary standards are highly pure compounds that can be used to accurately determine the concentration of a known substance in a solution. Disodium salt is more commonly used as a secondary standard or as a reagent in laboratory experiments.
Is hcl praimary standard or secondary standard?
Hydrochloric acid (HCl) is considered a primary standard because it is a highly pure compound that can be used directly to prepare standard solutions for titrations and other analytical procedures without the need for standardization.
WHY IS BORAX CONSIDERED A PRIMARY STANDARD?
Borax is considered a primary standard because it is a solid compound with a high degree of purity, a high molecular weight, and stable chemical properties. These characteristics make it suitable for accurately measuring the concentration of acids or bases in a titration procedure.
What is the volume of iodine?
The volume of iodine at standard temperature and pressure (STP) is 22.4 L per mole.
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.
Is borax a primary standard?
No, borax is not considered a primary standard. Primary standards are highly pure reagents that can be used to standardize solutions for volumetric analysis, while borax is typically used as a secondary standard for acid-base titrations.
Is disodium salt considered as a primary standard?
No, disodium salt is not typically considered a primary standard in analytical chemistry. Primary standards are highly pure compounds that can be used to accurately determine the concentration of a known substance in a solution. Disodium salt is more commonly used as a secondary standard or as a reagent in laboratory experiments.
Is hcl praimary standard or secondary standard?
Hydrochloric acid (HCl) is considered a primary standard because it is a highly pure compound that can be used directly to prepare standard solutions for titrations and other analytical procedures without the need for standardization.
WHY IS BORAX CONSIDERED A PRIMARY STANDARD?
Borax is considered a primary standard because it is a solid compound with a high degree of purity, a high molecular weight, and stable chemical properties. These characteristics make it suitable for accurately measuring the concentration of acids or bases in a titration procedure.
What is the symbol for iodine gas?
I2(g) is the symbol for iodine in its standard state (including its state symbol.)
Iodine what is it's state of matter?
Under standard conditions of temperature and pressure Iodine is a crystalline solid.
What is the volume of iodine?
The volume of iodine at standard temperature and pressure (STP) is 22.4 L per mole.
What is the standard atomic notation for iodine?
53 ..I 127
At STP which element is a solid hydrogen or iodine?
At standard temperature and pressure (STP), iodine is a solid while hydrogen is a gas.
Is sodium thiosulphate solution a primary standard?
No, sodium thiosulfate solution is not typically considered a primary standard. It is commonly used as a titrant in redox titrations rather than as a primary standard due to its susceptibility to oxidation by air. Primary standards are typically pure, stable compounds that can be used to standardize solutions.
Why is sodium thiosulphate not considered as a primary standard?
Sodium thiosulfate is not considered a primary standard because its purity can be affected by oxidation upon exposure to air, making it difficult to accurately determine its concentration. Additionally, it is hygroscopic, meaning it can absorb moisture from the atmosphere, further affecting its purity and concentration over time.
