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Quantitative Method Involves the Determination of Concentration
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>> Determination of Concentration Assignment Help
The reactions in solutions are by far the most common. The first step to determine is to express the amount of substance present in a given volume of a solution.
Solution -> solute + Solvent
Qualitative methods to express a solution are dilute, concentrated, saturated and super saturated.
Quantitative method involves the determination of concentration In different way as described below:
(i) Molarity: It is the number of moles of solute dissolved or present per litre of the solution. It is represented by the symbol M.
(ii) Molality: Number of moles of solute present or dissolve in 1000 g or 1 kg of solvent. It is represented by the symbol m.
(iii) Mole fraction: It is the relative ratio of moles of solute and solution or solvent and solution.
Note: Molarity is temperature dependent while mole fraction and molality is temperature independent.
(iv) Strength: The strength of a solution is defined as the amount of the solute in grams present per litre of the solution (i.e. g/L).
(v) Normality: The normality of a solution is defined as the number of gram equivalents of the solute present per litre of the solution, it is represented by N.
E = Equivalent weight
(vi) Formality: Formality is similar to Molarity, It is especially used for ionic crystals like Na
(viii) Specific gravity = (weight of solution)/(volume of solution)
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