more simple problems based on mole concept and solution

Example: 5 - How many moles of sodium hydroxide are present in 3200 g of it? (Na=23, O=16, H..

1 mole of an atom = 1 gram atomic weight of an ato..

Important relationships - 1 mole of an atom = 1 gram atomic weight of an atom 1 mole of a molecule = 1 gram molecular weight of molecule 1 mole of a gas = 22.4 liters of gas at STP 1 mole of a substance = 6.023 x 10 2 3 , atoms, molecules or ions Molecular we..

An acid is a substance which can furnish hydrogen ions in its solution. Examples: ..

. Sedimentation followed by Decantation is used to separate an insoluble solid from a liquid. Filtration is a more effective method of separating an insoluble solid from a liquid. A soluble solid can be obtained back from a liquid in which it dissolves by the process of evaporation. Distillation is..

Acid Base Titrations and Indicators - Titration is an operation for the measurement of quantities of substances in solution by the method of 'volume analysis'. This process involves adding a solution of the reagent of known concentration (standard solution), ..

The ionization of a weak base is characterized by the equilibrium, If 'n' moles of the base are dissolved in 'V' units of volume (litres L) and a is the degree of ionization, then the equilibrium amounts of various species and the concentration in moles ..

Acid-base reactions according to this concept involve donation of electron pair by a base to an acid to form a co-ordinate bond. Lewis bases can be neutral molecules such as the ones shown below: These have one or more unshared pair/s of electrons..

Other Methods of Expressing Concentration of Solution - Molality is defined as the number of moles of solute dissolved per 1000 g (1 kg) of solvent. Molality is expressed as 'm'. Mole Fraction is the ratio of number of moles of one component to the ..

Molality is defined as the number of moles of solute dissolved per 1000 g (1 kg) of solvent. Molality is expressed as 'm'. ..