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Then it is possible to measure accurately the weight of it, so you know exactly how many moles of the primary standard you have. When it would have been hygroscopic then your actual mass of the standard is lower than the measured, caused by the extra weight of water.
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What is the common primary standard used in the laboratory to standardize of NaOH and HCl?
Sodium Carbonate (Na2CO3) is most commonly used to standardise acids as it is non-hygroscopic (doesn't absorb water from the atmosphere).Oxalic Acid (HOOCCOOH or H2C2O4) used to standardise bases
Is potassium gold cyanide hygroscopic?
In crystalline form it's non-hygroscopic, or has only slight hygroscopicity. In powder form it is, yes.
Why is KHP used as a primary standard for non aqueous titration?
KHP (potassium hydrogen phthalate) is available extremely pure (which is always good for a primary standard) and gives a very sharp end-point especially with Crystal Violet Indicator
Is EDTA considered as a primary standard?
No. Chemical compounds have to fulfill a number of requirements before they can be classified and used as a primary standard: A primary standard in chemistry is a reliable, readily quantified substance. Features of a primary standard include: 1. High purity 2. Stability (low reactivity) 3. Low hygroscopicity and efflorescence 4. High solubility (if used in titration) 5. High equivalent weight 6. Non-toxicity 7. Ready and cheap availability Edta and particularly the sodium salts of EDTA which are frequently used do not fulfill the first requirement. Therefore the solution of EDTA has to be standardised against a known and accepted primary standard.
Why is non-chelated iron important for organisms?
cause you dont have a weener
What is the opposite of Hygroscopic?
Non-Hygroscopic
What is the common primary standard used in the laboratory to standardize of NaOH and HCl?
Sodium Carbonate (Na2CO3) is most commonly used to standardise acids as it is non-hygroscopic (doesn't absorb water from the atmosphere).Oxalic Acid (HOOCCOOH or H2C2O4) used to standardise bases
What must be done to determine the concentration of a non standard solution?
Titrate it with a primary standard
Is potassium gold cyanide hygroscopic?
In crystalline form it's non-hygroscopic, or has only slight hygroscopicity. In powder form it is, yes.
What is GR about primary education of first to eight standard examination of maharashtra government?
non granted school
What is the standard visitation for the non custodial parent if the custodial parent has primary physical custody in Tennessee?
SEE LINKS BELOW
Why is KHP used as a primary standard for non aqueous titration?
KHP (potassium hydrogen phthalate) is available extremely pure (which is always good for a primary standard) and gives a very sharp end-point especially with Crystal Violet Indicator
Is EDTA considered as a primary standard?
No. Chemical compounds have to fulfill a number of requirements before they can be classified and used as a primary standard: A primary standard in chemistry is a reliable, readily quantified substance. Features of a primary standard include: 1. High purity 2. Stability (low reactivity) 3. Low hygroscopicity and efflorescence 4. High solubility (if used in titration) 5. High equivalent weight 6. Non-toxicity 7. Ready and cheap availability Edta and particularly the sodium salts of EDTA which are frequently used do not fulfill the first requirement. Therefore the solution of EDTA has to be standardised against a known and accepted primary standard.
What type of colors?
primary and non primary
What are types of colors?
primary and non primary
When is 1 plus 1 NOT equal to two?
Whenever you use any non-standard definition.Whenever you use any non-standard definition.Whenever you use any non-standard definition.Whenever you use any non-standard definition.
Is non key is same as those key that are not primary key?
A non-key field can be any field in the table that is not the primary key. During the process of normalisation identifying non-key fields is important, as they and other fields may be moved and new tables created. Foreign keys will be left in the table.
