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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If the number of moles of gaseous substances is left unchanged, then increasing the volume will decrease the concentration
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.
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
The main parameter you need to calculate when preparing a standard solution is the concentration of solute in proportion to the solvent.
A volumetric flask is used for making up fixed volumes of solutions of accurately known concentrations.
Solutions containing a precise mass of solute in a precise volume of solution are called standard solutions.
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.
Dilution is the prosess where a solution is added more of the solvent to decrease the concentration of the solute.
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
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