15 Facts on H2SO4 + Ag2CrO4: What, How To Balance & FAQs

Ag2CrO4 has 3 elements, 2 metals and 1 nonmetal. So it is a ternary ionic solid. H2SO4 king of all acids is known as the oil of vitriol. Let us see how Ag2CrO4 reacts with H2SO4.

Ag2CrO4 is not soluble in water and melts at 665 °C ( 5.625 g/cm3). It is red in color due to the electric dipole allowing chromate transition shifts at ~ 5000 cm-1. Sulfur in H2SO4 is sp3 hybridized with a C2 point symmetry group and tetrahedral shape. It is reactive to metals, ionizes 100 %, and acts as battery acid.

In this article, we will discuss the important facts about H2SO4 + Ag2CrO4 chemical reactions such as reaction enthalpy, the heat required, the product formed, the type of reaction, the type of intermolecular forces between their compounds, etc.

What is the product of H2SO4 and Ag2CrO4

Silver sulfate (Ag2SO4) and chromic acid (H2CrO4) are formed when silver chromate (Ag2CrO4) reacts with sulfuric acid (H2SO4).

Ag2CrO4 + H2SO4 → Ag2SO4 + H2CrO4

What type of reaction is H2SO4 + Ag2CrO4

Ag2CrO4 + H2SO4 falls under Double Displacement (Salt metathesis), redox, and exothermic reaction.

How to balance H2SO4 + Ag2CrO4

Ag2CrO4 + H2SO4 reaction is already balanced as all the atoms are equal in number on the reactant and product side as well.

1 Ag2CrO4 +1 H2SO4 → 1 Ag2SO4 + 1 H2CrO4

H2SO4 + Ag2CrO4 titration

The titration between H2SO4 and Ag2CrO4 is an acid-base titration.

Apparatus

Beaker, burette, conical flask, and measuring cylinder.

Indicator

Methyl orange is the indicator used here.

Procedure

  • Silver chromate is soluble in water, and forms 0.1 N fresh Ag(OH)2 that is taken into the burette.
  • 10 ml of H2SO4 is pipetted out into a clean conical flask.
  • Add 1-2 drops of methyl orange indicator.
  • Add Ag(OH)2 drop wise from the burette into the conical flask with constant swirling until the appearance of red orange color. This is the end point of the titration.
  • Note the volume of Ag(OH)2 required to neutralize the H2SO4 acid solution.
  • The above procedure is repeated for 3 consistent readings.
  • The strength of H2SO4 is calculated using the reaction. SAg(OH)2 VAg(OH)2 = SH2SO4 VH2SO4

H2SO4 + Ag2CrO4 net ionic equation

The net ionic equation of H2SO4 + Ag2CrO4 is as follows:

Ag2CrO4 (s) = CrO42−(aq)+2 Ag+ (aq)

To get the net ionic equation for H2SO4 + Ag2CrO4, we should follow the steps given below:

  • Write the general balanced molecular equation.
  • Ag2CrO4 + H2SO4 → Ag2SO4 + H2CrO4
  • Now the solubility equation is written by labeling the state or phase (s, l, g or aq) of each substance in the balanced molecular equation of H2SO4 + As2S3.
  • Ag2CrO4 (s) + H2SO4 (aq) → Ag2SO4 (aq)+ H2CrO4 (aq)
  • Break all aquatic soluble ionic substances into their corresponding ions to get the balanced ionic equation.
  • Ag2CrO4 (s) + 2 H+ (aq) + SO42– (aq) = 2H+ (aq)+ CrO42−(aq)+2 Ag+ (aq) + SO42– (aq)
  • Remove spectator ions (H+ and SO42–) from the reactant and product side of the balanced ionic equation.
  • Finally, the net ionic equation for H2SO4 +Ag2SO4 is:
  • Ag2CrO4 (s) = CrO42−(aq)+2 Ag+ (aq)

H2SO4 + Ag2CrO4 conjugate pairs

The conjugate pairs in H2SO4 + Ag2CrO4 are:

  • The conjugate base of H2SO4 after deprotonation is HSO4.
  • The conjugate base of H2CrO4 after deprotonation is HCrO4.
  • Ag2CrO4 and Ag2SO4 do not have their conjugate pairs because both compounds do not contain hydrogen atom that can remove as proton ion.

H2SO4 + Ag2CrO4 intermolecular forces

The intermolecular forces that work on H2SO4, Ag2CrO4 , Ag2SO4 and H2CrO4 are-

  • Dipole-dipole force, London dispersion force, and hydrogen bonding are present in H2SO4 molecules due to their polar and unsymmetrical nature.
  • Strong electrostatic interaction is present in molecules of Ag2CrO4 as silver and chromate ions are held with other through strong ionic bonds.
  • Strong electrostatic interaction is present in molecules of Ag2SO4 as silver and sulfate ions are held with other through strong ionic bonds.
  • Weak hydrogen bonding is present in H2CrO4 due to the presence of two hydrogens in the achromic acid.
  • Hydrogen bonds, dipole-induced dipole forces, and London dispersion forces exist in H2O due to their strong polar and ionic nature.

H2SO4 + Ag2CrO4 reaction enthalpy

The net enthalpy change of the reaction H2SO4 + Ag2CrO4  is 93.03 kJ/mol. The value is gained from the following mathematical calculation.

Compound Standard Formation Enthalpy (ΔfH°(KJ/mol))
H2SO4 -735.13
Ag2CrO4 -731.8
Ag2SO4 -715.9 
H2CrO4 -658.20
Standard Formation Enthalpy of Compounds
  • ΔH°f = ΣΔH°f (products) – ΣΔH°f (reactants) (kJ/mol)
  • ΔHf = [( -715.9 ) + (-658.20) -( (-735.13) +(-731.8))] kJ/mol
  • ΔHf = 93.03 kJ/mol

Is H2SO4 + Ag2CrO4 a buffer solution

Ag2CrO4  + H2SO4 is not a buffer solution because H2SO4 is a strong acid and a buffer solution contains a weak acid and its conjugate base or a weak base and its conjugate acid

Is H2SO4 + Ag2CrO4 a complete reaction

Ag2CrO4 + H2SO4 is not a complete reaction because, in this reaction, the final product H2CrO4 can further break into chromium oxide (CrO3) and water (H2O) successfully.

Complete Reaction
Representation of incomplete reaction H2SO4 + Ag2CrO4

Is H2SO4 + Ag2CrO4 an exothermic or endothermic reaction

Ag2CrO4 + H2SO4 is an endothermic reaction because the net change of enthalpy is positive (i.e., ΔHf > 0, 93.03 kJ/mol) where the +ve sign interprets the following facts about the reaction:

  • 93.03 kJ/mol heat is absorbed by the reactants Ag2CrO4 and H2SO4  due to the formation of more energetic Ag2SO4 and H2CrO4 
  • Heat absorption by Ag2CrO4 and H2SO4 lowers the energy of surroundings and makes the products less stable.

Is H2SO4 + Ag2CrO4 a redox reaction

Ag2CrO4 + H2SO4 is not a redox reaction because in this reaction electron transfer does not take place and therefore each element have the same oxidation states even after the reaction completion.

H2SO4 + Ag2CrO4 a prcipitation reaction

Ag2CrO4 + H2SO4 is not a precipitation reaction because the completion of the reaction provides the Ag2SO4 and H2CrO4 as the main products that are dissolved in reaction media.

Is H2SO4 + Ag2CrO4 reversible or irreversible reaction

Ag2CrO4 + H2SO4 is an irreversible reaction because the products Ag2SO4 and H2CrO4 are stable, so they do not need to react with each other to form reactants back.

Is H2SO4 + Ag2CrO4 displacement reaction

Ag2CrO4 + H2SO4 is a double displacement reaction because, in this reaction, sulfate ion (SO42–) and chromate ion (Cr2O42-) exchange their places with each other to form new products, H3AsO4 and SO2.

Conclusion

This article concludes that Ag2CrO4 + H2SO4 reaction is carried out through a double displacement mechanism and produces less stable Ag2SO4 and H2CrO4 by absorbing approximately 93.03 KJ/mol energy. So we can say that Ag2CrO4 + H2SO4 reaction is an endothermic reaction in which products exist in the reaction media.