Chemistry Concepts – Mole concept, Eudiometry, POAC, Limiting is given, then the question is based on the concept of limiting reagent. Eudiometry: Eudiometry. means gas analysis. It means in this type of numericals either you have to find out vol. of GAS From the data given in question or you. Such a tube is known as Eudiometer tube and hence the name Eudiometry General Assumptions: In all problems, it is assumed that the sparking occurs at.

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The mole is defined as the amount of a substance containing as many atoms, molecules, ions, electrons or other questionss entities as there are carbon atoms in exactly 12 g of 12 C. This principle states that the moles of atoms of an element are conserved throughout the reaction.


Whenever balanced chemical equation is given, mole method is very useful. In single-reactant reactions, the calculations are carried out with only that amount of the reactant which has converted to the product.


In the reactions where more than on reactant is involved, one has to first identify the limiting reactant, i. All calculations are to be carried out with the amount of the limiting reactant only.

The reactant with the least number of equivalents is the limiting reactant.

One equivalent of any substance is the amount of that substance that combines with 1 g H or displaces 1 g H. For metals in hydrides, oxides and chlorids, eq. When the reactions are provided, then take the n – factor according to the reaction.

Gas Eudiometry – Quantum Study

Phenolphthalein shows colour change after the first step and Methyl st1: Oxidation number of s-block do not change. NaHC 2 O 4.

Advantages of Mole Method over other Methods: Concept of Limiting Reagent: If A is limiting eudoimetry If B is limiting reactant: The limiting reactant can also be ascertained by knowing the initial number of equivalents of each reactant. Equivalent weights of some elements: For metals in hydrides, oxides and chlorids.


Graham’s Law of Diffusion & Gas Eudiometry – Study Material for IIT JEE | askIITians

Law of chemical equivalence: When 2 or more indicators are mentioned in the question, then the reaction takes place in two phases. H 2 O 2 oxygen? Similarly, for H 2 C 2 O 4.