The molar mass and molecular weight of Sodium chloride (NaCl) is 58.4428 g/mol.
The composition of the NaCl formula is as follows:
| Element | Symbol | Atomic Weight | Atoms | Total Atomic Weight | Mass Percent |
|---|---|---|---|---|---|
| Chlorine | Cl | 35.453 g/mol | 1 | 35.4530 g/mol | 60.6628% |
| Sodium | Na | 22.98977 g/mol | 1 | 22.9898 g/mol | 39.3372% |
How to find the molar mass of Sodium chloride (NaCl)?
The molar mass and molecular weight of Sodium chloride (NaCl) can be calculated in 4 steps.
Step I: Identify the different elemental atoms present in the NaCl compound.
The given compound is NaCl. It comprises atoms from 2 different elements i.e., Chlorine (Cl) and Sodium (Na).
Step II: Find the atomic weight of each element in the NaCl.
Here is the list of atomic weights for all elements, let’s check the Chlorine (Cl) and Sodium (Na) atom’s atomic weight.
• The atomic weight of Chlorine (Cl) is 35.453 g/mol.
• The atomic weight of Sodium (Na) is 22.98977 g/mol.
Step III: Determine the number of atoms of each element present in the NaCl compound.
As per the chemical formula, NaCl, It is made up of 1 Chlorine atom and 1 Sodium atom.
| Element | Number of Atoms |
|---|---|
| Cl (Chlorine) | 1 |
| Na (Sodium) | 1 |
Step IV: Calculate the molar mass of the Sodium chloride (NaCl) compound by applying the formula:
For Sodium chloride (NaCl):
Substituting into the above formula, the values determined in steps II and III:
Molar mass of NaCl = [(35.453 x 1) + (22.98977 x 1)]
Molar mass of NaCl = 35.453 + 22.9897 = 58.4428 g/mol
Result: The molecular weight and molar mass of Sodium chloride (NaCl) is 58.4428 g/mol.
FAQs
What is the mass percent composition of Chlorine (Cl) in Sodium chloride (NaCl)? |
To find the mass percent of Chlorine in NaCl, follow the steps given below:
∴ Mass of Chlorine in NaCl = 35.453 x 1 = 35.4530 g/mol. Mass Percent Composition (%) Formula = (Mass of Element in the Compound/Molar Mass of the Compound) x 100 ∴ Mass percent of Chlorine in NaCl = (Mass of Chlorine in NaCl/Molar mass of NaCl) × 100% Result: NaCl contains 60.66 % of Chlorine as per its chemical composition.
|
What is the mass percent composition of Sodium (Na) in Sodium chloride (NaCl)? |
To find the mass percent of Sodium in NaCl, follow the steps given below:
∴ Mass of Sodium in NaCl = 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 NaCl = (Mass of Sodium in NaCl/Molar mass of NaCl) × 100% Result: NaCl contains 39.34 % of Sodium as per its chemical composition.
|
What is the atomic percentage composition of elements in Sodium chloride (NaCl)? |
| Atomic percentage composition formula (%) = Number of atoms of a particular element in a compound/Total number of atoms in that compound
For NaCl: The atomic percentage composition of elements in the compound is: Atomic percentage of Chlorine (Cl) in NaCl: Atomic percentage of Sodium (Na) in NaCl:
|
How many grams of Chlorine are present in 1 mole of NaCl? |
| There are 1 Cl-atoms in a NaCl molecule. • Atomic weight of a Cl-atom = 35.453 g/mol ∴ Total mass of Chlorine in 1 mole of NaCl = 1 x 35.453 = 35.45 g. Therefore there are 35.45 grams of Chlorine in 1 mole of NaCl. |
What is the mass of 2 mol of NaCl? |
| The molecular mass of NaCl is 58.4428 g/mol. This means 58.4428 grams of NaCl are present per mole. Therefore, we can find the mass of NaCl in 2 moles as follows: ∴ Moles = Mass/Molar Mass ∴ Mass of NaCl = Moles x Molar mass ∴ Mass of NaCl = 2 x 58.4428 = 116.89 g Thus, the mass of 2 mol of NaCl is 116.89 g. |
If you have 47.1416 grams of NaCl, how many moles do you have? |
| ∴ Moles = Mass/Molar mass ∴ Moles of NaCl = 47.1416/58.4428 = 0.8066 Thus, there are 0.8066 moles of NaCl in its 47.1416 grams. |
What is the mass in kg of 9.74 x 1025 molecules of NaCl? |
| 1 mole of a substance contains Avogadro number of particles i.e., 6.02 x 1023. Therefore, the number of moles in 9.74 x 1025 molecules of NaCl are: ∴ Moles of NaCl = 9.74 x 1025/6.02 x 1023 = 161.8
Now that we have its number of moles, so, we can use the molar mass of NaCl (58.4428 g/mol) to find its mass as shown below. ∴ Mass of NaCl = Moles x Molar mass
∴ Mass of NaCl = 161.8 x 58.4428 = 9456.14 g
Converting mass from grams (g) to kilograms (kg) gives us: ∴ Mass of NaCl = 9456.14/1000 = 9.46 kg
The mass of 9.74 x 1025 molecules of NaCl is 9.46 kg.
|
What is the molar mass and molecular weight of Sodium chloride (NaCl)? |
NaCl is composed of 1 Chlorine (Cl), and 1 Sodium (Na) atom.
To find the molecular mass of NaCl, one multiplies the atomic weight of each element by its number of atoms in the molecule and then sums the results. ∴ For NaCl, it’s (1 x 35.4530) + (1 x 22.9898).
Therefore, the molar mass of Sodium chloride (NaCl) is 58.4428 g/mol.
|
About the author
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/