Training the student about: Use of the analytical balance. Volumetric glassware measurement. Use of digital and glass pipettes. Ideal preparation of different types of solutions (Standard, Saturated, Unsaturated and Percent solutions).
Normality (g eq/L): The concentration of a solution in equivalents per liter. Molality (W/W): Mole (mol.): A mass of a pure substance equal to its formula weight in grams (g). Molarity (W/V): The concentration of a solution in units of moles of solute per liter of solution.
In case of solids: 1 molar solution=M.W in gms.x100/purity%g/l. Example: 1 molar solution of NaOH: =40 x 100/96.0 g/l. In case of liquids: 1 molar solution=M.W x 100/purity x Sp.Gr. g/l. Example: 1 molar solution of acetic acid: = 60.05 x 100/99.5 x 1.049 g/l.
Take two conical flasks. Place distilled water in one flask and tape water in the other. Weigh 5 ml. of water six times from each flask using the analytical balance. Express your results in the table.