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a primary standard should essentially available in pure form , stable towards light and heat and react in a stoichiometric proportion.
HCl is a gas which is dissolved in water to form the solution the concentration expressed is very approximate so its not a primary standard.
NaOH cannot be weighed in open air because it is highly hygroscopic.
FeSO4 under goes aerial oxidation .so all these are not used as primary standards .
but they can be used as secondary standards as the solutions have to be titrated each and every day against a primary standard.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agobecause in the preparation of hydrogen gas ......granulated zinc is used n which is the purest form of zinc. if granulated zinc reacts with dilute sulphuric acid .....there , a displacement reaction takes place but the purest form of zinc don't react with concentrated sulphuric acid ..... . i.e ....there will be no displacement reaction ....so hydrogen gas will not be formed
Wiki User
∙ 12y agoIt is because it absorbs moisture from air and therefore doesn't meet the criteria for a primary standard.
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Is hcl praimary standard or secondary standard?
HCl is not used as a primary standard
Is hcl a primary standard or a secoundary standard?
HCl is a gas which is dissolved in water to form the solution the concentration expressed is very approximate so its not a primary standard.
What primary standard is used to titrate against potassium hydroxide?
HCl, hydrochloric acid, is the primary standard used to titrate against potassium hydroxide.
Why would NaOH not be used as a primary standard in the standardization of HCl with Borax?
Sodium hydoxide cannot be used as a primary standard because of its hygroscopic properties as a solid. Because it is so prone to absorbing water, it is impossible to accurately measure the mass of a solid sample, so instead it must be put into solution and tirated with a known acidic solution, such as HCl. This makes it a secondary standard as opposed to a primary standard. By. Kuatsienu Divine
Standardization of hcl solution with primary standard na2co3 solution?
solution containig (3.3)gm na2co3 .h2o in (15ml)
Is hcl praimary standard or secondary standard?
HCl is not used as a primary standard
Is hcl a primary standard or a secoundary standard?
HCl is a gas which is dissolved in water to form the solution the concentration expressed is very approximate so its not a primary standard.
What is the primary standard solution for checking normality of Hcl?
NaOH
What primary standard is used to titrate against potassium hydroxide?
HCl, hydrochloric acid, is the primary standard used to titrate against potassium hydroxide.
Why would NaOH not be used as a primary standard in the standardization of HCl with Borax?
Sodium hydoxide cannot be used as a primary standard because of its hygroscopic properties as a solid. Because it is so prone to absorbing water, it is impossible to accurately measure the mass of a solid sample, so instead it must be put into solution and tirated with a known acidic solution, such as HCl. This makes it a secondary standard as opposed to a primary standard. By. Kuatsienu Divine
Standardization of hcl solution with primary standard na2co3 solution?
solution containig (3.3)gm na2co3 .h2o in (15ml)
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
Why is nitric acid not often used as a standard solution for neutralization titrations?
The usual primary standard for acid-base titration is sulfuric acid. Nitric acid tends to lose NO2 by volatilization and HCl is also more volatile.
What is the symbol for hydrochloric acid?
The chemical formula (not symbol) of hydrogen chloride is HCl; for a diluted solution you can use "HCl dil." but this isn't a standard formula.
Is hydrogen chloride solid?
HCl is liquid at standard temperature and pressure
What is the primary standard apparatus in chemistry?
we use primary standard apparatus in chemistry lab to find accurate resultthe examples of primary standard apparatus arepippetteburreteVolumetric Flask
What is the primary standard used in this experiment .define a primary standard?
It is primary standard is a substance that has a known high digree of purity ,reatively large molar mass ,is nonhygroscopic and reacts in a predic table way.
