Question

What is the molar mass of the sodium hydroxide?

Answer 1

Hint: The molar mass of any compound can be calculated by adding the atomic weight of the individual atoms involved in the chemical formula of the respective chemical compound. We should know the molecular or chemical formula of the respective compound.

Complete answer:
- In the question it is asked to calculate the molar mass of the sodium hydroxide.
- We should know the chemical formula of the sodium hydroxide to calculate the molar mass of it.
- The chemical formula of the sodium hydroxide is NaOH.
- We should know the atomic weights of the sodium, hydrogen and the oxygen to calculate the molar mass of the sodium hydroxide.
- The atomic weight of the sodium is 23, the atomic weight of the hydrogen is 1, and the atomic weight of the oxygen is 16.
- Now we can calculate the molar mass or molecular weight of the sodium hydroxide by using the formula below.
Molecular weight of the NaOH = Atomic weight of the Na + Atomic weight of the H + (atomic
weight of the oxygen)
Molecular weight of the NaOH= 23 + 1 + (16) = 40.
- Now we must express the molecular weight of the sodium hydroxide in molar mass.
- The molar mass of the sodium hydroxide is 40 g/mol.

Note:
Without knowing the chemical or molecular formula of the compound and without knowing the atomic weights of the individual elements involved in the chemical formula it is very difficult to calculate the molar mass of the respective compound.