Question

How can I find the n-factor of product of a chemical reaction...???

Answer 1

For Acids


Acids are the species which furnish H+ ions when dissolved in a solvent. For acids, n-factor is defined as the number of H+ ions replaced by 1 mole of acid in a reaction. Note that the n-factor for acid is not equal to its basicity; i.e. the number of moles of replaceable H+ atoms present in one mole of acid.



For example, n-factor of HCI = 1,



n-factor of HNO3 = 1,



n-factor of H2SO4 = 1 or 2, depending upon extent of reaction it undergoes.



H2SO4 + NaOH → NaHSO4 + H2O



Although one mole of H2SO4 has 2 replaceable H atoms but in this reaction H2SO4 has given only one H+ ion, so its n-factor would be 1.



H2SO4 + 2NaOH → Na2SO4 + 2H2O



The n-factor of H2SO4 in this reaction would be 2.