Molar Mass of Ammonium Phosphate ((NH4)3PO4)
Molar Mass of Ammonium Phosphate makes it easier to move between measured grams and moles in classroom precipitation problems. Molar Mass of (NH₄)₃PO₄ is 149.09 g/mol, based on 4 element types, with O 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 Ammonium Phosphate is:
149.09 g/mol
Molar Mass of (NH₄)₃PO₄ equals 149.09 g/mol, so 149.09 grams is one mole.
Element Breakdown Table
| Element | Count | Atomic mass | Calculation | Contribution |
|---|---|---|---|---|
| Nitrogen (N) | 3 | 14.01 | 3 x 14.01 | 42.02 g/mol |
| Hydrogen (H) | 12 | 1.01 | 12 x 1.01 | 12.10 g/mol |
| Phosphorus (P) | 1 | 30.97 | 1 x 30.97 | 30.97 g/mol |
| Oxygen (O) | 4 | 16.00 | 4 x 16.00 | 64.00 g/mol |
Final molar mass 42.020 + 12.100 + 30.970 + 64.000 | 149.09 g/mol | |||
Computing Molar Mass of Ammonium Phosphate Step by Step
Molar Mass of Ammonium Phosphate: Step-by-Step Calculation
1. Identify Element Counts
Read (NH4)3PO4 and list how many atoms of each element are present:
- 3 atoms of Nitrogen (N)
- 12 atoms of Hydrogen (H)
- 1 atom of Phosphorus (P)
- 4 atoms of Oxygen (O)
2. Determine Atomic Masses
Look up each element mass from the periodic table:
- Nitrogen (N) ~= 14.007 g/mol
- Hydrogen (H) ~= 1.008 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:
- Nitrogen (N): 3 x 14.007 = 42.020 g/mol
- Hydrogen (H): 12 x 1.008 = 12.100 g/mol
- Phosphorus (P): 1 x 30.974 = 30.970 g/mol
- Oxygen (O): 4 x 15.999 = 64.000 g/mol
4. Sum Total Molar Mass
Add all contributions to get the final molar mass in g/mol.
Molar Mass = (3 x 14.007 + 12 x 1.008 + 1 x 30.974 + 4 x 15.999)
Molar Mass = 42.020 + 12.100 + 30.970 + 64.000
Molar Mass = 149.090 g/mol
Final rounded value shown on this page: 149.09 g/mol.
Visual Calculation Chart
| Element | Count | Mass | Count x mass | Contribution |
|---|---|---|---|---|
| Nitrogen (N) | 3 | 14.007 | 3 x 14.007 | = 42.020 |
| Hydrogen (H) | 12 | 1.008 | 12 x 1.008 | = 12.100 |
| Phosphorus (P) | 1 | 30.974 | 1 x 30.974 | = 30.970 |
| Oxygen (O) | 4 | 15.999 | 4 x 15.999 | = 64.000 |
Final molar mass 42.020 + 12.100 + 30.970 + 64.000 | = 149.090 | |||
Easy Way to Remember
Easy way to remember Molar Mass of Ammonium Phosphate
- Molar Mass of Ammonium 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.
Use this checklist with molar mass guide whenever you want a quick confidence check.
Sample Reactions
| Type | Reaction |
|---|---|
| Double displacement | AgNO₃ + NaCl → AgCl + NaNO₃ |
| Acid-salt reaction | Na₂CO₃ + ₂HCl → ₂NaCl + H₂O + CO₂ |
Do You Know?
– Ammonium Phosphate contains 4 element types: N, H, P, O.
– O contributes the largest share of this compound's total molar mass.
– In (NH₄)₃PO₄, H appears with the highest atom count.
– Its molar mass is 149.09 g/mol, which is used directly in gram-to-mole conversions.
– A common reaction for Ammonium Phosphate is double displacement (AgNO₃ + NaCl → AgCl + NaNO₃).
Why This Compound Matters
Ammonium 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 Ammonium Nitrate (NH4NO3) and Ammonium Nitrite (NH4NO2).
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 (NH₄)₃PO₄ and miscounting atoms.
- Forgetting that parentheses in (NH₄)₃PO₄ multiply the entire grouped part.
- Mixing up O element contribution with total molar mass.
- Reporting a value without units; final answer should be in g/mol for Ammonium Phosphate.
Quick Revision
Formula: (NH4)3PO4
Molar Mass: 149.09 g/mol
Key takeaway: count atoms accurately, multiply by atomic masses, and sum only at the end.
Formula Explanation
(NH4)3PO4 contains Nitrogen (N) (3), Hydrogen (H) (12), Phosphorus (P) (1), Oxygen (O) (4). Add each element contribution to get total molar mass.
FAQ
Conclusion
Molar Mass of Ammonium Phosphate and Molar Mass of (NH₄)₃PO₄ are now easy to revise with this structured page. You can use this method in exams, lab reports, and daily chemistry practice.