15 Feite oor HCl + P4O10: Wat, hoe om te balanseer & Gereelde Vrae

HCl is an inorganic acid and P4O10 is one of the oxides of phosphorous. Let us inspect how these two compounds react to each other.

In the reaction HCl+P4O10, HCl is reacting with a non-metal oxide, tetraphosphorus decaoxide (P4O10) deur te absorbeer heat to generate the products. HCl is one of the important mineral acids in chemistry and P4O10 is a deliquescent white solid.

In this article, essential features of the reaction between HCl and P4O10 will be brought to light.

Wat is die produk van HCl en P4O10

Phosphorous oxychloride (POCl3) en fosforsuur (H3PO4) also known as orthophosphoric acid are produced in the reaction between HCl and P4O10.

HCl + P4O10  = POCl3 + H3PO4

Watter tipe reaksie is HCl + P4O10

Die reaksie HCl + P4O10 does not belong to any particular category of reaction as listed onder.

  • HCl + P4O10 is not a combination reaction as the two compounds are not combining together to form a single compound.
  • HCl + P4O10 is not a decomposition reaction as a single compound is not decomposed into two simpler compounds.
  • HCl + P4O10 is not a combustion reaction as it is not involving a reaction with O2 producing CO2 en H2O.
  • HCl + P4O10 is not a neutralization reaction as it is not a reaction between acid and base.

Hoe om HCl + P te balanseer4O10

The reaction written below is ongebalanseerd.

HCl + P4O10  = POCl3 + H3PO4

Following steps is to be followed for getting the balanced equation for this reaction.

  • The formulas of the compound present should be multiplied by the smallest possible figure when the number of atoms of every element is nie dieselfde nie.
  • The number of P atoms on reactant and product side is 4 and 2 respectively.
  • So, we will multiply both POCl3 en H3PO4 met 2 soos hieronder getoon.
  • HCl + P4O10  =  2POCl3 + 2 uur3PO4
  • Here, the number of H and Cl atoms on reactant and product side is 1 and 6 respectively.
  • So, we will multiply HCl by 6.
  • The number of O atoms is now the same on left hand side and right hand side.
  • Dus is die gebalanseerde vergelyking-
  • 6HCl + P4O10 =  2POCl3 + 2 uur3PO4

HCl + P4O10 titrasie

For the reaction HCl + P4O10, titrasie cannot be performed as this reaction does not fulfill some basic criteria for titration.

HCl + P4O10 netto ioniese vergelyking

Die ioniese vergelyking for the reaction HCl + P4O10  is not possible because, except for HCl, the other three compounds cannot be written as dissociated ions.

HCl + P4O10 gekonjugeerde pare

  • Die gekonjugeerde basis van HCl is Cl-.
  • P4O10 het No. vervoegde paar as it is neither an acid nor a base.

HCl + P4O10  intermolekulêre kragte

  • Dipool-dipool en Londense verspreidingskragte; is die twee intermolekulêre kragte present in HCl, where the former one is significant as there is some polar nature present in HCl.
  • P4O10 has weak van der Waals forces as intermolecular force.

HCl + P4O10  reaksie entalpie

The reaction enthalpy of HCl + P4O10 is 215.32 kJ/mole.

verbindingsEnthalpy of formation (kJ/mole)
HCl (waterig)-167.16
P4O10 (S)-2984.0
Table representing enthalpy of formation values of all compounds

The reaction enthalpy is calculated as follows.

Reaction enthalpy = [Enthalpy of formation values of POCl3 en H3PO3] – [Enthalpy of formation values of HCl and P4O10]

= [(-597.0*2) + (-1288.3*2)] – [(-167.16*6) + (-2984.0)] = 215.32

Is HCl + P4O10 'n bufferoplossing

The mixture of HCl and P4O10 is nie 'n bufferoplossing aangesien HCl 'n sterk suur is.

Is HCl + P4O10 'n volledige reaksie

HCl + P4O10 is a complete reaction as further reaction is impossible after product formation.

Is HCl + P4O10 'n eksotermiese of endotermiese reaksie

Die reaksie HCl + P4O10 is endotermies in nature as the reaction enthalpy value is 215.32 kJ/mole.

Is HCl + P4O10 'n redoksreaksie

Die reaksie HCl + P4O10 is nie 'n redoksreaksie, because the oxidation states of all the atoms H, Cl, P, and O present in the reactant and product molecules are the same before and after the reaction.

Is HCl + P4O10 'n neerslagreaksie

HCl and P4O10 is not a precipitation reaction as the product POCl3 is liquid and the another product H3POis a water-soluble solid.

Is HCl + P4O10 omkeerbare of onomkeerbare reaksie

HCl + P4O10 is an irreversible reaction as it is unidirectional.

Is HCl + P4O10 verplasingsreaksie

The reaction HCl and P4O10 is not a displacement reaction as a more reactive ion of one molecule is not displacing a less reactive ion from another molecule.


In conclusion, when HCl reacts with tetraphosphorus decaoxide, the products are POCl3 en H3PO4. H3PO4 appears as a clear colorless liquid or transparent solid. On the other hand, POCl3 is a fuming, oily type of liquid used for chlorination purposes.

Tuluma Das

Hallo, ek is Tuluma Das, het my Ph.D. in Organiese Chemie van die Indiese Vereniging vir die Kweek van Wetenskap. Ek het 'n totaal van 9 jaar se navorsingservaring insluitend 'n Ph.D. en Postdoc en 3 jaar onderwyservaring. Ek het tot dusver 7 referate in internasionale joernale gepubliseer. Kom ons koppel deur Linkedin: https://www.linkedin.com/in/tuluma-das-90887a99/

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