Silver sulfide is the only sulfide of silver available. It is a black dense solid and is insoluble in most solvents. Let us see how Ag2S reacts with H2SO3 in this article.
H2SO3 is an unstable compound that mostly exists in gaseous form and the aqueous form is currently unidentified. Ag2S is an ionic compound of silver and sulfur. It occurs naturally as tarnishes on silver surfaces.
We will discuss the facts of the H2SO3 + Ag2S reaction, like redox reaction, balanced chemical equation, net ionic equation and intermolecular forces in this article.
What is the product of H2SO3 and Ag2S
Silver sulfite (Ag2SO3) and hydrogen sulfide (H2S) are the products of the H2SO3 and Ag2S reaction. The chemical equation for this reaction is,
H2SO3 + Ag2S = Ag2SO3 + H2S
What type of reaction is H2SO3 + Ag2S
H2SO3 + H2S reaction is a double displacement reaction.
How to balance H2SO3 + Ag2S
The balanced chemical equation for H2SO3 + Ag2S reaction is,
H2SO3 + Ag2S = Ag2SO3 + H2S
The steps mentioned below must be used to derive the balanced chemical equation:
- The general unbalanced equation for the reaction is,
- H2SO3 + Ag2S = Ag2SO3 + H2S
- The number of moles atoms on each side of the equation is,
| Atom | Number on reactant side | Number on product side |
|---|---|---|
| H | 2 | 2 |
| S | 2 | 2 |
| O | 3 | 3 |
| Ag | 2 | 2 |
- As the number of moles of each atom is already equal; therefore, there is no need to balance the chemical equation.
- Thus, the balanced chemical equation is,
- H2SO3 + Ag2S = Ag2SO3 + H2S
H2SO3 + Ag2S titration
The titration between H2SO3 and Ag2S is not favourable as H2SO3 is a weak acid and Ag2S also has an acidic character.
H2SO3 + Ag2S net ionic equation
The net ionic equation for H2SO3 and Ag2S reaction is,
2H+ (aq.) + SO32- (aq.) + Ag2S (s) = Ag2SO3 (s) + H2S (g)
The steps for obtaining a net ionic equation are:
- Write the balanced chemical equation.
- H2SO3 + Ag2S = Ag2S+ H2S
- Indicate the chemical state of each compound (s, l, g or aq.) and split the strong electrolytes into ions.
- 2H+ (aq.) + SO32- (aq.) + Ag2S (s) = Ag2SO3 (s) + H2S (g)
- Eliminate all the spectator ions to obtain the net ionic equation.
- 2H+ (aq.) + SO32- (aq.) + Ag2S (s) = Ag2SO3 (s) + H2S (g)
H2SO3 + Ag2S conjugate pairs
H2SO3 and Ag2S do not contribute to any conjugate pair while the conjugate pair of H2SO3 is its conjugate base HSO3–.
H2SO3 + Ag2S intermolecular forces
The interaction between H2SO3 and Ag2S contains the following intermolecular forces.
- The intermolecular forces of attraction in H2S are dipole-dipole interaction.
- Hydrogen bonding is available in H2SO3.
- Ionic bonding is present in Ag2S molecules.
H2SO3 + Ag2S reaction enthalpy
H2SO3 + Ag2S reaction enthalpy is -490.78 kJ/mol. The reaction enthalpy is calculated using standard enthalpy of formation of reactants and products, which is as follows:
| Molecules | Enthalpy of reaction (in kJ/mol) |
|---|---|
| H2SO3 | -635.55 |
| Ag2S | -31.8 |
| Ag2SO3 | -490.78 |
| H2S | -20.63 |
Reaction enthalpy (ΔHf) = Standard enthalpy of formation (Products – reactants)
ΔHf = (-490.78 – 20.63) – (-635.55 – 31.8)
Thus, ΔHf = -490.78 kJ/mol.
Is H2SO3 + Ag2S a buffer solution
H2SO3 + Ag2S do not form a buffer solution because there is no conjugate base available for H2SO3 in the reaction.
Is H2SO3 + Ag2S a complete reaction
H2SO3 + Ag2S reaction is a complete reaction; the solid products formed do not react further.
Is H2SO3 + Ag2S an exothermic or endothermic reaction
The H2SO3 + Ag2S reaction is an exothermic reaction because the reaction enthalpy value is negative.
Is H2SO3 + Ag2S a redox reaction
H2SO3 + Ag2S reaction is not a redox reaction because the oxidation state of each atom is stable through the process.
Is H2SO3 + Ag2S a precipitation reaction
H2SO3 + Ag2S reaction is a precipitation reaction and white crystalline precipitates of Ag2SO3 are obtained.
Is H2SO3 + Ag2S reversible or irreversible reaction
H2SO3 + Ag2S reaction is an irreversible reaction because the H2S gas, once evolved cannot be reverted and also the reaction path has only one way.
Is H2SO3 + Ag2S displacement reaction
H2SO3 + Ag2S reaction is a double displacement reaction in which H and Ag atoms displace each other from their respective compounds to generate new products.
Conclusion:
In the end, we can conclude that H2SO3 and Ag2S are unstable compounds available in small quantities. The Ag2S breaks down into silver dithionate and silver sulfate to become stable. The reactions proceed with the evolution of heat.
Hi, I am Sahil Singh. I completed my graduation in Bachelor of Science. I always have keen interest in Physics & Chemistry. I worked on my own blog for 1 year in the technology and gaming niche. I try my best to provide valuable knowledge through my articles.
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