Molar Mass of Ammonium Chromate ((NH4)2CrO4)
Molar Mass of Ammonium Chromate is a key number in salt-related stoichiometry, especially when balancing reactants and products. Molar Mass of (NH₄)₂CrO₄ is 152.07 g/mol, based on 4 element types, with O contributing the largest share.
For fast checks, use the molar mass calculator, verify element values in the periodic table, or explore more molar mass page.
Molar Mass of Ammonium Chromate is:
152.07 g/mol
Molar Mass of (NH₄)₂CrO₄ equals 152.07 g/mol, so 152.07 grams is one mole.
Element Breakdown Table
| Element | Count | Atomic mass | Calculation | Contribution |
|---|---|---|---|---|
| Nitrogen (N) | 2 | 14.01 | 2 x 14.01 | 28.01 g/mol |
| Hydrogen (H) | 8 | 1.01 | 8 x 1.01 | 8.06 g/mol |
| Chromium (Cr) | 1 | 52.00 | 1 x 52.00 | 52.00 g/mol |
| Oxygen (O) | 4 | 16.00 | 4 x 16.00 | 64.00 g/mol |
Final molar mass 28.010 + 8.060 + 52.000 + 64.000 | 152.07 g/mol | |||
Computing Molar Mass of Ammonium Chromate Step by Step
Molar Mass of Ammonium Chromate: Step-by-Step Calculation
1. Identify Element Counts
Read (NH4)2CrO4 and list how many atoms of each element are present:
- 2 atoms of Nitrogen (N)
- 8 atoms of Hydrogen (H)
- 1 atom of Chromium (Cr)
- 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
- Chromium (Cr) ~= 51.996 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): 2 x 14.007 = 28.010 g/mol
- Hydrogen (H): 8 x 1.008 = 8.060 g/mol
- Chromium (Cr): 1 x 51.996 = 52.000 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 = (2 x 14.007 + 8 x 1.008 + 1 x 51.996 + 4 x 15.999)
Molar Mass = 28.010 + 8.060 + 52.000 + 64.000
Molar Mass = 152.070 g/mol
Final rounded value shown on this page: 152.07 g/mol.
Visual Calculation Chart
| Element | Count | Mass | Count x mass | Contribution |
|---|---|---|---|---|
| Nitrogen (N) | 2 | 14.007 | 2 x 14.007 | = 28.010 |
| Hydrogen (H) | 8 | 1.008 | 8 x 1.008 | = 8.060 |
| Chromium (Cr) | 1 | 51.996 | 1 x 51.996 | = 52.000 |
| Oxygen (O) | 4 | 15.999 | 4 x 15.999 | = 64.000 |
Final molar mass 28.010 + 8.060 + 52.000 + 64.000 | = 152.070 | |||
When you move to another formula, molar mass page gives you the same step-by-step method for quick revision.
Easy Way to Remember
Easy way to remember Molar Mass of Ammonium Chromate
- Molar Mass of Ammonium Chromate: 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?
– Ammonium Chromate contains 4 element types: N, H, Cr, O.
– O contributes the largest share of this compound's total molar mass.
– In (NH₄)₂CrO₄, H appears with the highest atom count.
– Its molar mass is 152.07 g/mol, which is used directly in gram-to-mole conversions.
– A common reaction for Ammonium Chromate is double displacement (AgNO₃ + NaCl → AgCl + NaNO₃).
Why This Compound Matters
Ammonium Chromate 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 Dichromate ((NH4)2Cr2O7) and Ammonium Nitrate (NH4NO3).
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)₂CrO₄ and miscounting atoms.
- Forgetting that parentheses in (NH₄)₂CrO₄ 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 Chromate.
Quick Revision
Formula: (NH4)2CrO4
Molar Mass: 152.07 g/mol
Key takeaway: count atoms accurately, multiply by atomic masses, and sum only at the end.
Formula Explanation
(NH4)2CrO4 contains Nitrogen (N) (2), Hydrogen (H) (8), Chromium (Cr) (1), Oxygen (O) (4). Add each element contribution to get total molar mass.
FAQ
Conclusion
Molar Mass of Ammonium Chromate and Molar Mass of (NH₄)₂CrO₄ are now easy to revise with this structured page. You can use this method in exams, lab reports, and daily chemistry practice.