Mr(K3PO4)

To find the molar mass of potassium phosphate (K₃PO₄), you need to sum the molar masses of each of its constituent elements. Here’s how you can do it:

1. Potassium (K): The molar mass of potassium is approximately 39.10 g/mol. Since there are three potassium atoms in K₃PO₄, you multiply this by 3:

   • \( 3 \times 39.10 \, \text{g/mol} = 117.30 \, \text{g/mol} \)

2. Phosphorus (P): The molar mass of phosphorus is approximately 30.97 g/mol. Since there is one phosphorus atom in K₃PO₄:

   • \( 1 \times 30.97 \, \text{g/mol} = 30.97 \, \text{g/mol} \)

3. Oxygen (O): The molar mass of oxygen is approximately 16.00 g/mol. Since there are four oxygen atoms in K₃PO₄:

   • \( 4 \times 16.00 \, \text{g/mol} = 64.00 \, \text{g/mol} \)

Now, add these together to find the total molar mass of K₃PO₄:

\[ \text{Molar mass of K}_3\text{PO}_4 = 117.30 \, \text{g/mol} + 30.97 \, \text{g/mol} + 64.00 \, \text{g/mol} = 212.27 \, \text{g/mol} \]

Therefore, the molar mass of potassium phosphate (K₃PO₄) is approximately 212.27 g/mol.