which of the following is standard solution
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In analytical chemistry, a standard solution is a solution containing a precisely known concentration of an element or a substance. A known weight of solute is dissolved to make a specific volume. ... Standard solutions are used to determine the concentrations of other substances, such as solutions in titration.
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Standard Solutions and Concentration Units. Standard solutions have a known concentration which is both precise and accurate, often to 4 or 5 significant figures. ... Some examples of good primary standards are sodium carbonate, sodium oxalate, potassium dichromate and KHP (potassium acid phthalate).
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