For the reaction Initially 2.5 moles of Fe(NO3)3 and 3.6 moles of Na2CO3 are taken. If 6.3 moles of Na2CO3 is obtained the % yield of given reaction is ?

 

3.9 gm Al(OH)3 is reacted with excess of HCl , 6.5 gm AlCl3 is formed determined % yield of reaction ?

200 gm of CaCO3 on heating produces 11.2 litre of CO2 (g) at STP calculate % yield of reaction?

How many grams of Fe2O3 formed by heating of 18 gm FeO with O2.

SOLUTION:

How many moles O2 are required to needed produced 5 moles of Fe2O3.

SOLUTION:

367.5 gm KClO3 (122.5) when heated then calculate. (1) How many gram of O2 is produced? (2) How Many litre of O2 is produced at STP?

SOLUTION:

A piece of Cu contains 6.022 x10^24 atoms. How many mole of Cu does it contain?

What is the "Gram Molecular mass" ?

Gram Molecular mass: Gram molecular mass can be defined as the mass of 1 mole of molecules.

What is "Molecular mass ?

Molecular mass : Molecular mass is the number which indicates how many times the mass of one molecule of a substance is heavier in comparison to 1/12th part of the mass of one atom of C-12.

What is Gram atomic mass (GAM) ?

Gram atomic mass : The gram atomic mass can be defined as the mass of 1 mole atoms of an element.

What is Atomic mass unit (amu) ?

The quantity [1/12 mass of an atom of C-12] is known as atomic mass unit. The actual mass of one atom of C-12 = 1.9924x10^-26 kg

What is "Atomic mass" ?

Atomic mass of an element can be defined as the number which indicates how many times the mass of one atom of the element is heavier in comparison to 1/12 th part of the mass of one atom of

Carbon-12.

What is "mole" ?

 A mole is the amount of substance that contains as many species [Atoms, molecules ions or other particles] as there are atoms in exactly 12 gm of C-12

                         [1Mole= 6.022x10^23 Species]

MOLE-MOLE ANALYSIS:

Mole Concepts:

Mole and Moles Analysis rule:

Ratio of Moles of reactant or product with its coefficient is always constant for a balance chemical equation:

ILLUSTRATIVE EXAMPLE (1):

ILLUSTRATIVE EXAMPLE (2):

ILLUSTRATIVE EXAMPLE (3):

ILLUSTRATIVE EXAMPLE (4):  367.5 gm KClO₃ (122.5) when heated then calculate.

(1) How many gram of O₂ is produced?

(2)How Many litre of O₂ is produced at STP?

SOLUTION:

ILLUSTRATIVE EXAMPLE (5): how many moles O₂ are required to needed produced 5 moles of Fe₂O₃.

SOLUTION:

ILLUSTRATIVE EXAMPLE (6): how many grams of Fe₂O₃ formed by heating of 18 gm FeO with O₂.

SOLUTION: