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. S_Ag(OH)2 V_Ag(OH)2 = S_H2SO4 V_H2SO4

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) + SO₄^2– (aq) = 2H⁺ (aq)+ CrO₄²⁻(aq)+2 Ag⁺ (aq) + SO₄^2– (aq)–
• Remove spectator ions (H⁺ and SO₄^2–) 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

• ΔH°_f = ΣΔH°_f (products) – ΣΔH°_f (reactants) (kJ/mol)
• ΔH_f = [( -715.9 ) + (-658.20) -( (-735.13) +(-731.8))] kJ/mol
• ΔH_f = 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.

Is H₂SO₄ + Ag₂CrO₄ an exothermic or endothermic reaction

Ag₂CrO₄ + H₂SO₄ is an endothermic reaction because the net change of enthalpy is positive (i.e., ΔH_f > 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 (SO₄^2–) and chromate ion (Cr₂O₄^2-) 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.