Question

What is mole percent? Give an example

Answer 1

Hint: As we know that the mole is one of the important units in chemistry. All the chemical reactions are expressed in terms of the moles of the reactant and product. If one reaction is completed or not is also determined by the moles of the reactant and product.
Moles are defined as the given mass of the atom is divided by the atomic weight of the atom.
\[{\text{Moles = }}\dfrac{{{\text{given weight of the atom}}}}{{{\text{atomic weight of the atom}}}}\]
\[{\text{Given Weight Of The Atom = number of moles}} \times {\text{atomic weight of the atom}}\]
If we want the given weight of the atom to be the product of the number of moles of the atom and the atomic weight of the atom.

Complete answer:
We have to remember that the mole percent is nothing but the percentage of mole of one of the molecules in the solution. The mole percent depends on the mole of that molecule and the total moles of the solution.
For example in solution A and B are substances. X is the moles of substance A and Y is the moles of substance B in the solution.
We want to calculate the mole percent of A in the solution . The moles of the substance A are divided by the sum of the moles of the substance A and B in the solution and multiplied by a hundred for the percentage.
The mole percent of A\[ = \dfrac{X}{{(X + Y)}} \times 100\]
Here,
X is the moles of the substance A in the solution.
Y is the moles of the substance B in the solution.

Note:
We have to know the moles, we can calculate in so many ways. One of the ways is, if we want to calculate the moles of an atom, it means the first atomic weight of that atom. The atomic weight of the atom depends on the number of protons and the number of neutrons in the atom. One of the ways is, if we want to calculate the moles of molecules, it means the first atomic weight of all the atoms in the molecules. Another way to calculate the moles of an atom depends on the number of that atom and Avogadro’s number. Another way of calculating the moles of molecules is dependent on the number of those molecules and Avogadro’s number.