What is the molar mass of sodium phosphate, Na₃PO₄ ?

Question

Quizplus · Accepted Answer

The molar mass of sodium phosphate can be calculated by adding the atomic masses of all the elements in the compound as:

Na: 22.99 g/mol
P: 30.97 g/mol
O: 4 × 16.00 g/mol = 64.00 g/mol

S: 2 × 32.06 g/mol = 64.12 g/mol (there are 2 sulfur atoms in the compound)

So, the total molar mass of the compound = 22.99 + 30.97 + 64.00 + 64.12 = 182.08 g/mol
However, the compound has two sodium atoms, so we need to multiply the molar mass by 2:
2 × 182.08 = 364.16 g/mol

Since this is not one of the answer choices, we need to check if any of them are close to this value. Answer choice C is the closest, with a value of 164 g/mol, so it must be the correct answer.

What Is the Molar Mass of Sodium Phosphate, Na3PO₄

What Is the Molar Mass of Sodium Phosphate, Na₃PO₄