CuSO4 · 5H2O Molar Mass (With Calculations)

CuSO4 · 5H2O Molar Mass

Molar mass of CuSO4 · 5H2O is 249.677 g/mol.

Well, now you have come to know the molar mass of CuSO4 · 5H2O.

But how can you get this value?

Let me show you the calculation to get the molar mass of CuSO4 · 5H2O.

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

CuSO4 · 5H2O Molar Mass Calculation

If you have a periodic table with you, then you can easily calculate the molar mass of CuSO4 · 5H2O.

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 CuSO4 · 5H2O.

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 CuSO4 · 5H2O, there is Copper atom, Sulfur atom, Oxygen atoms and Hydrogen atoms.

So let’s look at the molar mass of Copper, Sulfur, Oxygen and Hydrogen from the above periodic table.

You can see that;

The molar mass of Copper is 63.546 g/mol. [1]

The molar mass of Sulfur is 32.06 g/mol. [2]

The molar mass of Oxygen is 15.999 g/mol. [3]

The molar mass of Hydrogen is 1.008 g/mol. [4]

Now, to calculate the molar mass of CuSO4 · 5H2O, you just have to add the molar mass of all the individual atoms that are present in CuSO4 · 5H2O.

So, Molar mass of CuSO4 · 5H2O = {Molar mass of Copper atom + Molar mass of Sulfur atom + (Molar mass of Oxygen atom × 4)} + [5 × {(Molar mass of Hydrogen × 2) + Molar mass of Oxygen}]
= {63.546 + 32.06 + (15.999) 4} + [5 × {(1.008 × 2) + 15.999}]
= {63.546 + 32.06 + 63.996} + [5 × {(2.016) + 15.999}]
= {63.546 + 32.06 + 63.996} + [5 × {18.015}]
= {63.546 + 32.06 + 63.996} + [90.075]
= 249.677 g/mol

Hence the Molar mass of CuSO4 · 5H2O is 249.677 g/mol.

I hope you have understood the short and simple calculation for finding the molar mass of CuSO4 · 5H2O.


  • 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;
Caffeine Molar Mass
CCl4 (Carbon tetrachloride) Molar Mass
CuCl2 Molar Mass
Oxalic acid (H2C2O4) Molar Mass
P4 Molar Mass


Jay is an educator and has helped more than 100,000 students in their studies by providing simple and easy explanations on different science-related topics. With a desire to make learning accessible for everyone, he founded Knords Learning, an online learning platform that provides students with easily understandable explanations.

Read more about our Editorial process.

Leave a Comment