Published By Vishal Goyal | Last updated: October 9, 2023

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Sodium bicarbonate (NaHCO3) Molar mass and Molecular weight

Molar mass / By

The molar mass and molecular weight of Sodium bicarbonate (NaHCO3) is 84.0069 g/mol.

The composition of the NaHCO3 formula is as follows:

Element Symbol Atomic Weight Atoms Total Atomic Weight Mass Percent
Oxygen O 15.9994 g/mol 3 47.9982 g/mol 57.1360%
Carbon C 12.011 g/mol 1 12.0110 g/mol 14.2976%
Hydrogen H 1.00797 g/mol 1 1.0080 g/mol 1.1999%
Sodium Na 22.98977 g/mol 1 22.9898 g/mol 27.3665%

 

The molar mass and molecular weight of Sodium bicarbonate (NaHCO3)

How to find the molar mass of Sodium bicarbonate (NaHCO3)?

The molar mass and molecular weight of Sodium bicarbonate (NaHCO3) can be calculated in 4 steps.

Step I: Identify the different elemental atoms present in the NaHCO3 compound.

The given compound is NaHCO3. It comprises atoms from 4 different elements i.e., Oxygen (O), Carbon (C), Hydrogen (H) and Sodium (Na).

Step II: Find the atomic weight of each element in the NaHCO3.

Here is the list of atomic weights for all elements, let’s check the Oxygen (O), Carbon (C), Hydrogen (H) and Sodium (Na) atom’s atomic weight.
• The atomic weight of Oxygen (O) is 15.9994 g/mol.
• The atomic weight of Carbon (C) is 12.011 g/mol.
• The atomic weight of Hydrogen (H) is 1.00797 g/mol.
• The atomic weight of Sodium (Na) is 22.98977 g/mol.

atomic weight of each element in NaHCO3

Step III: Determine the number of atoms of each element present in the NaHCO3 compound.

As per the chemical formula, NaHCO3, It is made up of 3 Oxygen atoms, 1 Carbon atom, 1 Hydrogen atom and 1 Sodium atom.

Element Number of Atoms
O (Oxygen) 3
C (Carbon) 1
H (Hydrogen) 1
Na (Sodium) 1

Step IV: Calculate the molar mass of the Sodium bicarbonate (NaHCO3) compound by applying the formula:

Formula to calculate Molar mass

For Sodium bicarbonate (NaHCO3):

Molar mass = Σ [(Atomic weight of Oxygen (O) x Number of O-atoms) + (Atomic weight of Carbon (C) x Number of C-atoms) + (Atomic weight of Hydrogen (H) x Number of H-atoms) + (Atomic weight of Sodium (Na) x Number of Na-atoms)] in NaHCO3

Substituting into the above formula, the values determined in steps II and III:

Molar mass of NaHCO3 = [(15.9994 x 3) + (12.011 x 1) + (1.00797 x 1) + (22.98977 x 1)]

Molar mass of NaHCO3 = 47.9982 + 12.011 + 1.00797 + 22.98977 = 84.0069 g/mol

Result: The molecular weight and molar mass of Sodium bicarbonate (NaHCO3) is 84.0069 g/mol.

FAQs

What is the mass percent composition of Oxygen (O) in Sodium bicarbonate (NaHCO3)?
To find the mass percent of Oxygen in NaHCO3, follow the steps given below:
  • Determine the atomic weight of Oxygen i.e., 15.9994 g/mol.
  • Find the mass of Oxygen (O) in NaHCO3 by multiplying the atomic weight of an O-atom with the total number of O-atoms in NaHCO3 i.e., 3.

∴ Mass of Oxygen in NaHCO3 = 15.9994 x 3 = 47.9982 g/mol.

Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100

∴ Mass percent of Oxygen in NaHCO3 = (Mass of Oxygen in NaHCO3/Molar mass of NaHCO3) × 100%
∴ Mass percent of Oxygen in NaHCO3 = (47.9982/84.0069) × 100% = 57.14 %

Result: NaHCO3 contains 57.14 % of Oxygen as per its chemical composition.

Mass percent Composition of O in Sodium bicarbonate (NaHCO3)

 

What is the mass percent composition of Carbon (C) in Sodium bicarbonate (NaHCO3)?
To find the mass percent of Carbon in NaHCO3, follow the steps given below:
  • Determine the atomic weight of Carbon i.e., 12.011 g/mol.
  • Find the mass of Carbon (C) in NaHCO3 by multiplying the atomic weight of an C-atom with the total number of C-atoms in NaHCO3 i.e., 1.

∴ Mass of Carbon in NaHCO3 = 12.011 x 1 = 12.0110 g/mol.

Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100

∴ Mass percent of Carbon in NaHCO3 = (Mass of Carbon in NaHCO3/Molar mass of NaHCO3) × 100%
∴ Mass percent of Carbon in NaHCO3 = (12.0110/84.0069) × 100% = 14.30 %

Result: NaHCO3 contains 14.30 % of Carbon as per its chemical composition.

Mass percent Composition of C in Sodium bicarbonate (NaHCO3)

 

What is the mass percent composition of Hydrogen (H) in Sodium bicarbonate (NaHCO3)?
To find the mass percent of Hydrogen in NaHCO3, follow the steps given below:
  • Determine the atomic weight of Hydrogen i.e., 1.00797 g/mol.
  • Find the mass of Hydrogen (H) in NaHCO3 by multiplying the atomic weight of an H-atom with the total number of H-atoms in NaHCO3 i.e., 1.

∴ Mass of Hydrogen in NaHCO3 = 1.00797 x 1 = 1.0080 g/mol.

Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100

∴ Mass percent of Hydrogen in NaHCO3 = (Mass of Hydrogen in NaHCO3/Molar mass of NaHCO3) × 100%
∴ Mass percent of Hydrogen in NaHCO3 = (1.0080/84.0069) × 100% = 1.20 %

Result: NaHCO3 contains 1.20 % of Hydrogen as per its chemical composition.

Mass percent Composition of H in Sodium bicarbonate (NaHCO3)

 

What is the mass percent composition of Sodium (Na) in Sodium bicarbonate (NaHCO3)?
To find the mass percent of Sodium in NaHCO3, follow the steps given below:
  • Determine the atomic weight of Sodium i.e., 22.98977 g/mol.
  • Find the mass of Sodium (Na) in NaHCO3 by multiplying the atomic weight of an Na-atom with the total number of Na-atoms in NaHCO3 i.e., 1.

∴ Mass of Sodium in NaHCO3 = 22.98977 x 1 = 22.9898 g/mol.

Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100

∴ Mass percent of Sodium in NaHCO3 = (Mass of Sodium in NaHCO3/Molar mass of NaHCO3) × 100%
∴ Mass percent of Sodium in NaHCO3 = (22.9898/84.0069) × 100% = 27.37 %

Result: NaHCO3 contains 27.37 % of Sodium as per its chemical composition.

Mass percent Composition of Na in Sodium bicarbonate (NaHCO3)

 

What is the atomic percentage composition of elements in Sodium bicarbonate (NaHCO3)?
Atomic percentage composition formula (%) = Number of atoms of a particular element in a compound/Total number of atoms in that compound

For NaHCO3:
• There’s 3 O-atoms, 1 C-atoms, 1 H-atoms, 1 Na-atoms.
• Total atoms in NaHCO3 = 3 + 1 + 1 + 1 = 6

The atomic percentage composition of elements in the compound is:

Atomic percentage of Oxygen (O) in NaHCO3:
= (3/6) * 100
= 50.00%

Atomic percentage of Carbon (C) in NaHCO3:
= (1/6) * 100
= 16.67%

Atomic percentage of Hydrogen (H) in NaHCO3:
= (1/6) * 100
= 16.67%

Atomic percentage of Sodium (Na) in NaHCO3:
= (1/6) * 100
= 16.67%

atomic percent composition in Sodium bicarbonate (NaHCO3)

 

How many grams of Oxygen are present in 1 mole of NaHCO3?
There are 3 O-atoms in a NaHCO3 molecule.
• Atomic weight of a O-atom = 15.9994 g/mol
∴ Total mass of Oxygen in 1 mole of NaHCO3 = 3 x 15.9994 = 48.00 g.
Therefore there are 48.00 grams of Oxygen in 1 mole of NaHCO3.

 

What is the mass of 6 mol of NaHCO3?
The molecular mass of NaHCO3 is 84.0069 g/mol. This means 84.0069 grams of NaHCO3 are present per mole.
Therefore, we can find the mass of NaHCO3 in 6 moles as follows:
∴ Moles = Mass/Molar Mass
∴ Mass of NaHCO3 = Moles x Molar mass
∴ Mass of NaHCO3 = 6 x 84.0069 = 504.04 g
Thus, the mass of 6 mol of NaHCO3 is 504.04 g.

 

If you have 32.8008 grams of NaHCO3, how many moles do you have?
∴ Moles = Mass/Molar mass
∴ Moles of NaHCO3 = 32.8008/84.0069 = 0.3905
Thus, there are 0.3905 moles of NaHCO3 in its 32.8008 grams.

 

What is the mass in kg of 14.00 x 1025 molecules of NaHCO3?
1 mole of a substance contains Avogadro number of particles i.e., 6.02 x 1023.
Therefore, the number of moles in 14.00 x 1025 molecules of NaHCO3 are:
∴ Moles of NaHCO3 = 14.00 x 1025/6.02 x 1023 = 232.6

Now that we have its number of moles, so, we can use the molar mass of NaHCO3 (84.0069 g/mol) to find its mass as shown below.

∴ Mass of NaHCO3 = Moles x Molar mass
∴ Mass of NaHCO3 = 232.6 x 84.0069 = 19538.11 g

Converting mass from grams (g) to kilograms (kg) gives us:

∴ Mass of NaHCO3 = 19538.11/1000 = 19.54 kg
The mass of 14.00 x 1025 molecules of NaHCO3 is 19.54 kg.

 

What is the molar mass and molecular weight of Sodium bicarbonate (NaHCO3)?
NaHCO3 is composed of 3 Oxygen (O), 1 Carbon (C), 1 Hydrogen (H), and 1 Sodium (Na) atom.
  • The atomic weight of Oxygen is 15.9994 g/mol.
  • The atomic weight of Carbon is 12.011 g/mol.
  • The atomic weight of Hydrogen is 1.00797 g/mol.
  • The atomic weight of Sodium is 22.98977 g/mol.

To find the molecular mass of NaHCO3, one multiplies the atomic weight of each element by its number of atoms in the molecule and then sums the results.

∴ For NaHCO3, it’s (3 x 15.9994) + (1 x 12.0110) + (1 x 1.0080) + (1 x 22.9898).

Therefore, the molar mass of Sodium bicarbonate (NaHCO3) is 84.0069 g/mol.

How to calculate the molar mass of Sodium bicarbonate (NaHCO3)

 

About the author

Vishal Goyal author of topblogtenz.com

Vishal Goyal

Vishal Goyal is the founder of Topblogtenz, a comprehensive resource for students seeking guidance and support in their chemistry studies. He holds a degree in B.Tech (Chemical Engineering) and has four years of experience as a chemistry tutor. The team at Topblogtenz includes experts like experienced researchers, professors, and educators, with the goal of making complex subjects like chemistry accessible and understandable for all. A passion for sharing knowledge and a love for chemistry and science drives the team behind the website. Let's connect through LinkedIn: https://www.linkedin.com/in/vishal-goyal-2926a122b/

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