Common-Core/ Grade 10
Science MCQ Based On Preparation of standard solutions
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Common-Core Grade 10 - 10 Preparation of standard solutions
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Solutions of known concentration can be prepared either by dissolving a known mass of solute in a solvent and diluting to a desired final volume
Pipets are designed to deliver a known volume of a liquid.
Washings ensures there is no solute left behind in the beaker or on the glass rod. This is important to ensure the concentration of the standard solution is as accurate as possible.
If the number of moles of gaseous substances is left unchanged, then increasing the volume will decrease the concentration
The main parameter you need to calculate when preparing a standard solution is the concentration of solute in proportion to the solvent.
The problem provides you with the molarity and volume of the sulfuric acid solution, which is an indirect way of providing you with the number of moles of sulfuric acid.
Dilution is the prosess where a solution is added more of the solvent to decrease the concentration of the solute.
A standard solution is a a solution of accurately known concentration prepared from a primary standard (a compound which is stable, of high purity, highly soluble in water and of a high molar mass to allow for accurate weighing) that is weighed accurately and made up to a fixed volume.
Solutions containing a precise mass of solute in a precise volume of solution are called standard solutions.
A standard solution is a a solution of accurately known concentration prepared from a primary standard that is weighed accurately and made up to a fixed volume.
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