Molar Mass of Lead(II) Phosphate (Pb3(PO4)2)
Molar Mass of Lead(II) Phosphate is a key number in salt-related stoichiometry, especially when balancing reactants and products. Molar Mass of Pb₃(PO₄)₂ is 811.54 g/mol, based on 3 element types, with Pb 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.
Molar Mass of Lead(II) Phosphate is:
811.54 g/mol
Molar Mass of Pb₃(PO₄)₂ equals 811.54 g/mol, so 811.54 grams is one mole.
Element Breakdown Table
| Element | Count | Atomic mass | Calculation | Contribution |
|---|---|---|---|---|
| Lead (Pb) | 3 | 207.20 | 3 x 207.20 | 621.60 g/mol |
| Phosphorus (P) | 2 | 30.97 | 2 x 30.97 | 61.95 g/mol |
| Oxygen (O) | 8 | 16.00 | 8 x 16.00 | 127.99 g/mol |
Final molar mass 621.600 + 61.950 + 127.990 | 811.54 g/mol | |||
Computing Molar Mass of Lead(II) Phosphate Step by Step
Molar Mass of Lead(II) Phosphate: Step-by-Step Calculation
1. Identify Element Counts
Read Pb3(PO4)2 and list how many atoms of each element are present:
- 3 atoms of Lead (Pb)
- 2 atoms of Phosphorus (P)
- 8 atoms of Oxygen (O)
2. Determine Atomic Masses
Look up each element mass from the periodic table:
- Lead (Pb) ~= 207.200 g/mol
- Phosphorus (P) ~= 30.974 g/mol
- Oxygen (O) ~= 15.999 g/mol
3. Multiply Atomic Mass by Quantity
Multiply atom count by atomic mass for each element:
- Lead (Pb): 3 x 207.200 = 621.600 g/mol
- Phosphorus (P): 2 x 30.974 = 61.950 g/mol
- Oxygen (O): 8 x 15.999 = 127.990 g/mol
4. Sum Total Molar Mass
Add all contributions to get the final molar mass in g/mol.
Molar Mass = (3 x 207.200 + 2 x 30.974 + 8 x 15.999)
Molar Mass = 621.600 + 61.950 + 127.990
Molar Mass = 811.540 g/mol
Final rounded value shown on this page: 811.54 g/mol.
Visual Calculation Chart
| Element | Count | Mass | Count x mass | Contribution |
|---|---|---|---|---|
| Lead (Pb) | 3 | 207.200 | 3 x 207.200 | = 621.600 |
| Phosphorus (P) | 2 | 30.974 | 2 x 30.974 | = 61.950 |
| Oxygen (O) | 8 | 15.999 | 8 x 15.999 | = 127.990 |
Final molar mass 621.600 + 61.950 + 127.990 | = 811.540 | |||
Easy Way to Remember
Easy way to remember Molar Mass of Lead(II) Phosphate
- Molar Mass of Lead(II) Phosphate: 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?
– Lead(II) Phosphate contains 3 element types: Pb, P, O.
– Pb contributes the largest share of this compound's total molar mass.
– In Pb₃(PO₄)₂, O appears with the highest atom count.
– Its molar mass is 811.54 g/mol, which is used directly in gram-to-mole conversions.
– A common reaction for Lead(II) Phosphate is double displacement (AgNO₃ + NaCl → AgCl + NaNO₃).
Why This Compound Matters
Lead(II) Phosphate 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 Phosphate (Na3PO4) and Potassium Phosphate (K3PO4).
Where This Is Used
- Competitive exams and school chemistry tests.
- Lab work when preparing measured solutions.
- Real-world manufacturing and quality checks.
Whenever you need lab-ready totals in those settings, molar mass calculations stays handy for cross-checking.
Common Mistakes When Calculating This
- Skipping subscripts in Pb₃(PO₄)₂ and miscounting atoms.
- Forgetting that parentheses in Pb₃(PO₄)₂ multiply the entire grouped part.
- Mixing up Pb element contribution with total molar mass.
- Reporting a value without units; final answer should be in g/mol for Lead(II) Phosphate.
Quick Revision
Formula: Pb3(PO4)2
Molar Mass: 811.54 g/mol
Key takeaway: count atoms accurately, multiply by atomic masses, and sum only at the end.
Formula Explanation
Pb3(PO4)2 contains Lead (Pb) (3), Phosphorus (P) (2), Oxygen (O) (8). Add each element contribution to get total molar mass.
FAQ
Conclusion
Molar Mass of Lead(II) Phosphate and Molar Mass of Pb₃(PO₄)₂ are now easy to revise with this structured page. You can use this method in exams, lab reports, and daily chemistry practice.