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Why is high molar mass a requirement of good primary standards for volumetric analysis?
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+ Analytical chemistry
+ Chemistry
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Kamil Aksoylu
Why is high molar mass a requirement of good primary standards for volumetric analysis?
It is usually recommended that a primary standard should have high molar mass. This translates to an ease in weighing. As the primary standard is usually weighed in a weighing bottle and then an amount nearest to the desired amount is transferred and then a solution is made by adding the required volume of solvent, a lower molar mass will mean that even a little amount less or more transferred will cause a change in the targeted strength of the solution. The effect will be comparatively less if the molar mass of the primary standard is high.
It is usually recommended that a primary standard should have high molar mass. This translates to an ease in weighing. As the primary standard is usually weighed in a weighing bottle and then an amount nearest to the desired amount is transferred and then a solution is made by adding the required volume of solvent, a lower molar mass will mean that even a little amount less or more transferred will cause a change in the targeted strength of the solution. The effect will be comparatively less if the molar mass of the primary standard is high.
It is usually recommended that a primary standard should have high molar mass. This translates to an ease in weighing. As the primary standard is usually weighed in a weighing bottle and then an amount nearest to the desired amount is transferred and then a solution is made by adding the required volume of solvent, a lower molar mass will mean that even a little amount less or more transferred will cause a change in the targeted strength of the solution. The effect will be comparatively less if the molar mass of the primary standard is high.
It is usually recommended that a primary standard should have high molar mass. This translates to an ease in weighing. As the primary standard is usually weighed in a weighing bottle and then an amount nearest to the desired amount is transferred and then a solution is made by adding the required volume of solvent, a lower molar mass will mean that even a little amount less or more transferred will cause a change in the targeted strength of the solution. The effect will be comparatively less if the molar mass of the primary standard is high.
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