NaOH Molar Mass Formula| How to Find Sodium Hydroxide Mass?

NaOH Molar Mass: Moles are very useful for finding the size of atoms in a substance. Using a particular number called Avogadro’s Constant (6.022e23), you can find the molar mass of a single element by looking up its atomic mass unit!. If you are looking for the NaOH Molar Mass, you must check the detailed information from the NaOH Molar Mass mass and formula for more information.

NaOH Molar Mass

It is also known as molecular weight and is the sum of the total mass in grams of all the atoms that make a molecule per mole. Its unit is in grams per mole.

Molar Mass Formula

This formula measures molar mass,

The molar mass of an element is the weight of one mole of this element; For example, 1mol of carbon 12 weighs 12 grams (a mole is defined: it is the number of atoms in 12 grams of C12). This can be found, for example, in the periodic table; The periodic table gives you the average molar mass for an element; For example, the molar mass of carbon is 12.0107 g/mol (and not 12.0000 g/mol) because all carbon is not C12, for example, C14.

What is NaOH?

Sodium hydroxide(NaOH) is a strong inorganic base commercially known as caustic soda and lye. To get the chemical formula of sodium hydroxide, we must first review the elements that make it up.

Sodium hydroxide comprises three molecules: sodium, oxygen, and hydrogen. It is a white, odorless crystalline solid at room temperature. It has very high melting and boiling points. It is hygroscopic, which readily absorbs water and moisture from the air.

It also absorbs carbon dioxide from the air. In other words, it’s a delicious recipe. Absorption of carbon dioxide by sodium hydroxide leads to the formation of sodium carbonate, as shown:

2NaOH(s)+CO2(g)→Na2CO3(aq)+H2O(l)

There are three main industrial methods of producing sodium hydroxide that involves the electrolysis of sodium chloride: the mercury process, the diaphragm process, and the oxidation of chloride ions in the anode part of the cell.

How to calculate the molar mass?

To calculate the molar mass of any substance, if you know –

1. The chemical formula –
   1. Take each molecule, multiply it by its molar mass, and add all the masses. You get the molar mass of the substance.
   2. For example –

• Water(H2O) – We have two hydrogen atoms with a molar mass of 1 gram and one oxygen atom with a molar mass of 16 grams. So, the molar mass of water is (2 x 1 gram) + (1 x 16 grams) = 18 grams, which is the molar mass of water.
• Glucose (C6H12O6) – We have six carbon atoms with a molar mass of 12 grams, twelve hydrogen atoms with a molar mass of 1 gram, and six oxygen atoms with a molar mass of 16 grams each. So, the molar mass of water is (6 x 12 grams) + (12 x 1 grams) + (6 x 16 grams) = 180 grams, which is the molar mass of water.

• The mass of ’n’ moles of the substance.
  • In this case, divide the given mass by ‘n’ to find the molar mass.

Note – Molar mass is the mass of 1 mole of the substance in question. When we say water has a molar mass of 18 grams, we mean that 1 mole (Na particles) has (have) a mass of 18 grams.

Calculation procedure of Sodium Hydroxide (NaOH):

Step 1: Find the chemical formula and determine the number of atoms in a molecule of sodium hydroxide.

From the chemical formula “NaOH”, you will know the different atoms and their number in sodium hydroxide molecule. From the “NaOH”, it is easy to find that a molecule of sodium hydroxide contains a sodium (H) atom, oxygen (O) atom, and one hydrogen (H) atom.

Step 2: Find the atomic weights of each atom (from the periodic table).

Atomic weights of atoms in a molecule of sodium hydroxide are as follows:

 Sodium (Na): 22.989769

Oxygen (O): 15.999

Hydrogen (H) : 1.008

Step 3: Calculate the total weight by multiplying the molecular weight of each molecule of sodium chloride by its number.

The total atomic weight of Sodium atoms: (1 Sodium atom * 22.989769) = 22.989769

The total atomic weight of Oxygen atoms: (1 Oxygen atom * 15.999) = 15.999

The total atomic weight of Hydrogen atoms: (1 Hydrogen atom * 1.008) = 1.008

Step 4: Adding the total weight of all atoms. 

Molar mass of Sodium chloride (NaOH): 22.989769 + 15.999 + 1.008

So the Molar mass of Sodium hydroxide is 39.996769 gms/ mol.

Conclusion:

Molecular mass is defined as the mass of molecules. The unit it is measured in is unified atomic mass units (a.m.u).

To calculate the molecular mass of NaOH(Sodium chloride), we need to add the molar masses of each element.

Now, the molar mass of Na is equal to 22.990 gms/ mol,

the molar mass of O is equal to 15.999 gms/ mol,

the molar mass of H is equivalent to 1.008 gms/ mol

When added, it sums up to 39.996769 gms/ mol.