Molar Mass of Aluminum Chloride (AlCl3)
Molar Mass of Aluminum Chloride makes it easier to move between measured grams and moles in classroom precipitation problems. Molar Mass of AlCl₃ is 133.33 g/mol, based on 2 element types, with Cl contributing the largest share.
For fast checks, use the calculate molar mass, verify element values in the periodic table with molar mass, or explore more molar mass calculations.
Molar Mass of Aluminum Chloride is:
133.33 g/mol
Molar Mass of AlCl₃ equals 133.33 g/mol, so 133.33 grams is one mole.
Element Breakdown Table
| Element | Count | Atomic mass | Calculation | Contribution |
|---|---|---|---|---|
| Aluminum (Al) | 1 | 26.98 | 1 x 26.98 | 26.98 g/mol |
| Chlorine (Cl) | 3 | 35.45 | 3 x 35.45 | 106.35 g/mol |
Final molar mass 26.980 + 106.350 | 133.33 g/mol | |||
Computing Molar Mass of Aluminum Chloride Step by Step
Molar Mass of Aluminum Chloride: Step-by-Step Calculation
1. Identify Element Counts
Read AlCl3 and list how many atoms of each element are present:
- 1 atom of Aluminum (Al)
- 3 atoms of Chlorine (Cl)
2. Determine Atomic Masses
Look up each element mass from the periodic table:
- Aluminum (Al) ~= 26.982 g/mol
- Chlorine (Cl) ~= 35.450 g/mol
3. Multiply Atomic Mass by Quantity
Multiply atom count by atomic mass for each element:
- Aluminum (Al): 1 x 26.982 = 26.980 g/mol
- Chlorine (Cl): 3 x 35.450 = 106.350 g/mol
4. Sum Total Molar Mass
Add all contributions to get the final molar mass in g/mol.
Molar Mass = (1 x 26.982 + 3 x 35.450)
Molar Mass = 26.980 + 106.350
Molar Mass = 133.330 g/mol
Final rounded value shown on this page: 133.33 g/mol.
Visual Calculation Chart
| Element | Count | Mass | Count x mass | Contribution |
|---|---|---|---|---|
| Aluminum (Al) | 1 | 26.982 | 1 x 26.982 | = 26.980 |
| Chlorine (Cl) | 3 | 35.450 | 3 x 35.450 | = 106.350 |
Final molar mass 26.980 + 106.350 | = 133.330 | |||
Easy Way to Remember
Easy way to remember Molar Mass of Aluminum Chloride
- Molar Mass of Aluminum Chloride: count atoms, multiply masses, and add totals.
- Write each element in a table so you do not miss subscripts.
- Keep 2-3 decimals during steps, then round only at the end.
Sample Reactions
| Type | Reaction |
|---|---|
| Double displacement | AgNO₃ + NaCl → AgCl + NaNO₃ |
| Acid-salt reaction | Na₂CO₃ + ₂HCl → ₂NaCl + H₂O + CO₂ |
Do You Know?
– Aluminum Chloride contains 2 element types: Al, Cl.
– Cl contributes the largest share of this compound's total molar mass.
– In AlCl₃, Cl appears with the highest atom count.
– Its molar mass is 133.33 g/mol, which is used directly in gram-to-mole conversions.
– A common reaction for Aluminum Chloride is double displacement (AgNO₃ + NaCl → AgCl + NaNO₃).
Why This Compound Matters
Aluminum Chloride appears in ionic-reaction practice and precipitation examples in school chemistry.
Its molar mass helps students move quickly between grams, moles, and concentration problems.
Similar calculations can be compared with Sodium Chloride (NaCl) and Potassium Chloride (KCl).
Where This Is Used
- Competitive exams and school chemistry tests.
- Lab work when preparing measured solutions.
- Real-world manufacturing and quality checks.
Common Mistakes When Calculating This
- Skipping subscripts in AlCl₃ and miscounting atoms.
- Rounding atomic masses too early before finishing all multiplication steps.
- Mixing up Cl element contribution with total molar mass.
- Reporting a value without units; final answer should be in g/mol for Aluminum Chloride.
Spot a slip early by comparing your work with molar mass before you hand in a final value.
Quick Revision
Formula: AlCl3
Molar Mass: 133.33 g/mol
Key takeaway: count atoms accurately, multiply by atomic masses, and sum only at the end.
Formula Explanation
AlCl3 contains Aluminum (Al) (1), Chlorine (Cl) (3). Add each element contribution to get total molar mass.
FAQ
Conclusion
Molar Mass of Aluminum Chloride and Molar Mass of AlCl₃ are now easy to revise with this structured page. You can use this method in exams, lab reports, and daily chemistry practice.