What is the Molar mass of Na3P
The Correct Answer and Explanation is :
The molar mass of sodium phosphide (Na₃P) is calculated by adding the atomic masses of its constituent elements. Sodium phosphide consists of three sodium (Na) atoms and one phosphorus (P) atom.
Step-by-Step Calculation:
- Atomic Mass of Sodium (Na):
The atomic mass of sodium is approximately 22.99 g/mol. - Atomic Mass of Phosphorus (P):
The atomic mass of phosphorus is approximately 30.97 g/mol.
Now, to calculate the molar mass of Na₃P:
- There are 3 sodium (Na) atoms, so the mass contribution of sodium is:
[
3 \times 22.99 \, \text{g/mol} = 68.97 \, \text{g/mol}
] - There is 1 phosphorus (P) atom, so the mass contribution of phosphorus is:
[
1 \times 30.97 \, \text{g/mol} = 30.97 \, \text{g/mol}
]
Finally, add the two masses together to get the total molar mass:
[
68.97 \, \text{g/mol} + 30.97 \, \text{g/mol} = 99.94 \, \text{g/mol}
]
Molar Mass of Na₃P:
The molar mass of sodium phosphide (Na₃P) is approximately 99.94 g/mol.
Explanation:
The molar mass of a compound is the sum of the atomic masses of all the atoms present in a molecule or formula unit. Each element has a specific atomic mass, which is typically found on the periodic table. These atomic masses are averaged based on the isotopic composition of the element. To find the molar mass of a compound, we multiply the atomic mass of each element by the number of atoms of that element in the formula, and then sum the values.
This process is essential in stoichiometry, as the molar mass allows chemists to convert between the mass of a substance and the number of moles, which is useful for calculating reactants and products in chemical reactions.