Question

What is the balanced chemical equation for this reaction?

H3PO4 + HCI PCI5 + H₂O
H3PO4 +5HCI → PCI5 + H₂O
H3PO4 + 5HCI - PCI5 + 4H₂O
O2H3PO4 +10HCI - 2PC15 + 4H₂O
2H3PO4 +5HCI - 2PC|5+ 3H₂O

Answer 1

The balanced chemical equation for the reaction between phosphoric acid
`H_3PO_4`) and hydrochloric acid (HCl) to produce phosphorus pentachloride (
`PCl_5` and water
`H_2O` is
`H_3PO_4 + 5 HCl - PCl_5 + 4 H_2O.`

Step-by-step explanation:

To determine the balanced chemical equation for the reaction between phosphoric acid
`H_3PO_4` and hydrochloric acid (HCl) to form phosphorus pentachloride
`PCl_5`) and water
`H_2O`, we need to balance the number of atoms of each element on both the reactant and product sides of the equation.

None of the proposed equations provided are correct. To balance the equation properly, we must follow the principle of conservation of mass. Since
`PCl_5` is formed from one molecule of phosphoric acid and five molecules of hydrochloric acid, the balanced equation should account for every atom. The correct balanced equation is:

`H_3PO_4 + 5 HCl - PCl_5 + 4 H_2O.`

The equation provided in the question,
`H_3PO_4 + 5 HCl - PCl_5 + 4 H_2O.`appears to be correct, assuming that the phosphoric acid reacts completely with hydrochloric acid to produce phosphorus pentachloride and water.