Sulphuric acid (H2SO4) is a strong acid, and silver sulphide (Ag2S) is a dense black solid. Let’s study the various aspects of the H2SO4 + Ag2S reaction in detail.
Sulphuric acid is a corrosive liquid that is dense, colourless, and oily. It completely ionizes in water as it’s a strong acid. Silver sulphide is an inorganic compound which is the only sulphide of silver. It is helpful in photography as a photosensitizer.
In this article, we will focus on several characteristics of the H2SO4 + Ag2S reaction in depth.
What is the product of H2SO4 and Ag2S?
Ag2S reacts with H2SO4 to form H2S (hydrogen sulphide) and Ag2SO4 (silver sulphate).
Ag2S(s) + H2SO4(aq) → Ag2SO4(s) + H2S(s)
What type of reaction is H2SO4+Ag2S?
H2SO4 and Ag2S belong to the category of double displacement reaction.
How to balance H2SO4+Ag2S?
- The general equation of the H2SO4 + Ag2S reaction is as follows: Ag2S + H2SO4 → Ag2SO4 + H2S
- The reaction is said to be balanced when the moles of reactant are equal to the moles of product.
- The above reaction is already balanced. Hence, the balanced reaction is given by: Ag2S + H2SO4 → Ag2SO4 + H2S
H2SO4 + Ag2S can be titrated to determine the quantity of Ag. However, because the reaction produces a precipitate, it should be carried out carefully.
Pipette, Erlenmeyer flask, burette holder, burette, wash bottle, dropper, volumetric flask and beakers.
Titre and titrant
In H2SO4 +Ag2S titration, H2SO4 is titrant, and the titre is AgNO3.
Phenolphthalein, an acid-base indicator, is employed to detect the end point of the titration.
- A burette was used to take standardized H2SO4, and an Erlenmeyer flask was used to take AgNO3.
- 1-2 drops of phenolphthalein indicator were added.
- H2SO4 from the burette was added dropwise into the conical flask until the solution changed from colourless to light pink.
- To obtain three concordant readings the process was repeated.
H2SO4 +Ag2S net ionic equation
The balanced net ionic equation of H2SO4+Ag2S is as follows:
Ag2S(s) + 2H+(aq) + SO42-(aq) → Ag2SO4(s) + H2S(s)
H2SO4 +Ag2S conjugate pairs
H2SO4 +Ag2S reaction don’t form conjugate pairs because they do not conjugate to produce the products.
H2SO4 and Ag2S intermolecular forces
H2SO4 and Ag2S have the following intermolecular forces,
- The intermolecular forces in H2SO4 are Van der Waal’s dispersion, Dipole-dipole interactions and hydrogen bonding.
- Being an ionic compound, Ag2S has ion-dipole interactions.
H2SO4 +Ag2S reaction enthalpy
The standard reaction enthalpy of the H2SO4 +Ag2S reaction is negative.
Is H2SO4 +Ag2S a buffer solution?
H2SO4 +Ag2S don’t form a buffer solution because of the strong acid H2SO4.
Is H2SO4 +Ag2S a complete reaction?
H2SO4 +Ag2S reaction is complete because hydrogen sulphide and silver sulphate are formed in the same amount and don’t undergo further reaction.
Is H2SO4 +Ag2S an exothermic or endothermic reaction?
The reaction between H2SO4 +Ag2S is an exothermic reaction and the heat released is used to complete the reaction.
Is H2SO4 +Ag2S a redox reaction?
Redox reaction doesn’t occur when H2SO4 +Ag2S react because the oxidation state of reactants and products remains the same.
Is H2SO4 + Ag2S a precipitation reaction?
H2SO4 + Ag2S is a precipitation reaction as it leads to the formation of precipitates like Ag2SO4 and H2S.
Is H2SO4 + Ag2S reversible or irreversible reaction?
The reaction between H2SO4 +Ag2S is irreversible as the reactants do not combine with products to reform them.
Is H2SO4 + Ag2S displacement reaction?
H2SO4 + Ag2S is a double displacement reaction cations and anions exchange their position resulting in the formation of a new product.
In conclusion, the reaction between H2SO4 + Ag2S has a high synthetic application and can be categorized as a double displacement and precipitation reaction with a negative enthalpy. The reaction is irreversible. Heat is liberated during the process.