Write a balanced chemical equation depicting the formation of one mole of pocl3(l) from its elements in their standard states.

Explanation:

First off, it's important to identify the constituent elements of the Compound.

From the compound, we can identify the following elements;

Phosphorus (P), Oxygen (O) and Chlorine (Cl)

So we have;

P + O + Cl --> POCl3

The standard states of elements are the phases that they adopt at a Temperature of 25°C and Pressure of 1 atm.

For POCl3, the standard form of P is P4 (s) while O2 (g) for O and Cl2 (g) for Cl. With this, we now have;

P4 + O2 + Cl2 --> POCl3

Upon balancing, we have;

P4 + 2O2 + 6Cl2 --> 4POCl3

The above equation shows 4 moles of POCl3, since the question stated one mole, we now have;

1/4 P₄ (s) +  1/2 O₂(g) +  3/2 Cl₂ (g) > POCl₃ (l)