HCl (Hydrochloric acid) Molar Mass (With Calculations)

Molar mass of HCl (Hydrochloric acid) is 36.458 g/mol.

Well, now you have come to know the molar mass of HCl.

But how can you get this value?

Let me show you the calculation to get the molar mass of HCl (Hydrochloric acid or Hydrogen chloride).

If you are a visual learner like me, then here is a short one minute video for you.

HCl (Hydrochloric acid) Molar Mass Calculation

If you have a periodic table with you, then you can easily calculate the molar mass of HCl (Hydrochloric acid).

Because the molar mass of any molecule (or compound) can be calculated by simply adding the molar masses of individual atoms.

Now here we have to find the molar mass of HCl (Hydrochloric acid).

So for that, have a look at the periodic table given below.

You can see the molar mass value of all the atoms from this periodic table.

Now in HCl, there is 1 Hydrogen atom and 1 Chlorine atom.

So let’s look at the molar mass of Hydrogen and Chlorine from the above periodic table.

You can see that;

The molar mass of Hydrogen is 1.008 g/mol. ^[1]

The molar mass of Chlorine is 35.45 g/mol. ^[2]

Now, to calculate the molar mass of HCl, you just have to add the molar mass of all the individual atoms that are present in HCl.

You can see that in HCl, there is 1 Hydrogen atom and 1 Chlorine atom.

So, Molar mass of HCl = Molar mass of 1 Hydrogen (H) atom + Molar mass of 1 Chlorine (Cl) atom.
= 1.008 + 35.45
= 36.458 g/mol

Hence the Molar mass of HCl is 36.458 g/mol.

I hope you have understood the short and simple calculation for finding the molar mass of HCl.

Remember

• In some books, you may see the unit of molar mass as grams/mole or g/mole. But all these units (i.e g/mol, grams/mole and g/mole) are the same. 
• Always follow the calculation order to avoid any mistakes in calculation. First solve the brackets, then multiplications and at last do the final addition.
• And don’t forget to put the unit g/mol to your final calculated molar mass.

Check out other related topics for more practice;
H2 Molar Mass
Ethanol (C2H5OH) Molar Mass
NH3 (Ammonia) Molar Mass
CaCl2 (Calcium chloride) Molar Mass
CH4 (Methane) Molar Mass