Sodium acetate trihydrate (CH3COONa · 3H2O) Molar Mass

Molar mass of Sodium acetate trihydrate (CH3COONa · 3H2O) is 136.079 g/mol.

Well, now you have come to know the molar mass of CH3COONa · 3H2O.

But how can you get this value?

Let me show you the calculation to get the molar mass of Sodium acetate trihydrate (CH3COONa · 3H2O).

You can also refer to this one minute video which will show you the simple steps to calculate the molar mass of any compounds.

Sodium acetate trihydrate (CH3COONa · 3H2O) Molar Mass Calculation

If you have a periodic table with you, then you can easily calculate the molar mass of CH3COONa · 3H2O.

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 Sodium acetate trihydrate (CH3COONa · 3H2O).

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 CH3COONa · 3H2O, there are Carbon atoms, Sodium atom, Hydrogen atoms and Oxygen atoms.

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

You can see that;

The molar mass of Carbon is 12.011 g/mol. ^[1]

The molar mass of Sodium is 22.990 g/mol. ^[2]

The molar mass of Hydrogen is 1.008 g/mol. ^[3]

The molar mass of Oxygen is 15.999 g/mol. ^[4]

Now, to calculate the molar mass of CH3COONa · 3H2O, you just have to add the molar mass of all the individual atoms that are present in CH3COONa · 3H2O.

So, Molar mass of CH3COONa · 3H2O = {(Molar mass of Carbon atom × 2) + (Molar mass of Hydrogen atom × 3) + (Molar mass of Oxygen atom × 2) + (Molar mass of Sodium atom)} + [3 × {(Molar mass of Hydrogen × 2) + Molar mass of Oxygen}]
= {(12.011 × 2) + (1.008 × 3) + (15.999 × 2) + (22.990)} + [3 × {(1.008 × 2) + 15.999}]
= {(24.022) + (3.024) + (31.998) + (22.990)} + [3 × {(2.016) + 15.999}]
= {82.034} + [3 × {18.015}]
= {82.034} + [54.045]
= 136.079 g/mol

Hence the Molar mass of CH3COONa · 3H2O is 136.079 g/mol.

I hope you have understood the short and simple calculation for finding the molar mass of CH3COONa · 3H2O.

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.

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