Question

Find equivalent mass of element. If 24 g of an element combines with 16 g of oxygen.

Answer 1

Hint: Equivalent mass of a chemical is defined as the mass of the chemical which combines or displaces a fixed quantity of other chemicals. Equivalent weight of acids or bases is going to depend on their acidity or basicity.

Complete step by step answer:
- In the question it is given that we have to find the equivalent mass of the element which combines with 16 g of oxygen.
- According to the given data mass of the unknown element X = 24 g.
- 24 g of X element combined with 16 g of oxygen.
- Therefore the total mass of the product = Mass of the element X + Mass of the oxygen element
Total mass of the product $= 24 g + 16 g = 40 g$.
- So, the mass of the oxide formed is 40 g.
- That means 16 g of oxygen = 24 g of the element x
- Therefore 8 g of oxygen (equivalent weight of oxygen) is equal to
\[\begin{align}
& =\dfrac{24}{16}\times 8 \\
& =12g \\
\end{align}\]

Therefore the equivalent mass of the element X is 12 g and the element X is Magnesium.

Note: Equivalent weight of chemical is going to depend on the valence electrons present in it. Some chemicals easily donate electrons to get stability. During the process of getting stability the chemical will lose electrons or gain electrons and it is going to decide the equivalent weight of the particular chemical.