A reactant that controls the amount of the product formed in a chemical reaction due to its smaller amount is called limiting reactant. Excess reactant: A reactant which is present in large amount in a chemical reaction & some of its amount left after the completion of chemical reaction is called excess reactant. Explanation:…
The study of relationship between the amounts of reactants and products as indicated by the balanced chemical equation is called stoichiometry. Explanation: Stoichiometry is used to calculate the amount of the product formed or that of the reactant required in a reaction. Stoichiometric calculations are performed by the following assumptions in hand: Reactants are completely…
The number of atoms, molecules, formula units or ions in one gram atom, one gram molecule, one gram formula unit or one gram ion, respectively is called Avogadro’s number. OR The number of atoms, molecules, formula units or ions in one mole of the substance is called Avogadro’s number. Representation of Avogadro’s Number: It is…
Below are some important points to get clear mole concept, definition of mole chemistry and mole units. Mole can be define as, The atomic mass, molecular mass, ionic mass or formula mass of a substance expressed in grams is called mole of that substance. OR The amount of a substance, which contains 6.02 x 1023…