Monday, May 24, 2010

Calculate the concentration in grams per Liter (g/L) of a 200 L solution containing 40 g of solute.

The concentration of a given solute in a given solution is the ratio of mass of solute and the volume of solution. Mathematically, it can be written as:


concentration = mass of solute / volume of solvent


In this case, mass of solute is 40 gm and the volume of solvent is 200 liters and hence the concentration can be calculated as:


concentration = 40 gm / 200 l = 0.2 gm/l


Hence the concentration of the given solution is 0.2 g/l.


Concentration is a term very commonly used in chemistry, especially when we are working in the laboratory. There are a number of units for reporting the concentration of a solution, including, gm/l, moles/lt, M (molar unit), N (in terms of normality), etc. One very common use of concentration is in titration experiments, especially the acid-base titration reaction, etc.


Hope this helps. 

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