15 Facts on HF + AgNO3: What, How To Balance & FAQs

Silver nitrate is a precursor of other silver compounds and is less sensitive to light when compared to other halides. Let us read how AgNO₃ reacts with HF in the article below:

Silver nitrate (AgNO₃) and hydrofluoric acid (HF) react to produce silver-fluoride salt and an acid. Silver nitrate shows a trigonal planar molecular structure containing silver and oxygen atoms. Hydrogen fluoride (HF) is an acid and exists as a colourless gas or liquid that is mainly used to obtain fluorine.

We will learn some key facts about HF + AgNO₃ reaction, like redox reaction, type of reaction, products, balanced chemical equation and conjugate pairs in this article.

What is the product of HF and AgNO₃

Silver fluoride (AgF) and Nitric acid (HNO₃) are the products of HF + AgNO₃ reaction. The chemical equation for the reaction of the HF and AgNO₃ is,

HF + AgNO₃ = AgF + HNO₃

What type of reaction is HF + AgNO₃

HF + AgNO₃ is a double displacement reaction.

How to balance HF + AgNO₃

The balanced chemical equation for HF + AgNO₃ reaction is,

HF + AgNO₃ = AgF + HNO₃

• The unbalanced equation for the reaction is,

• HF + AgNO₃ = AgF + HNO₃

• Check, if the number of moles of atoms available on the reactant side is equal to the moles of atoms available on the product side. The number of moles of atoms on both sides is:

Atoms	Number of atom on reactant side	Number of atom on product side
H	1	1
Ag	1	1
F	1	1
N	1	1
O	3	3

• As the number of atoms is already equal; therefore, there is no need to balance the equation. The equation is already balanced.

• Thus, the balanced chemical equation for HF + AgNO₃ reaction is,

• HF + AgNO₃ = HNO₃ + AgF

HF + AgNO₃ titration

Titration between HF and AgNO₃ is not feasible as AgNO₃ is neither an acid nor a base but dissociates to give Ag⁺ and NO₃^– ions. But titrations can be possible only between acid and base to obtain an acid point at neutralization which is not possible in HF and AgNO₃ cases.

HF + AgNO₃ net ionic equation

For HF + AgNO₃ no net ionic equation is available as discussed below.

The major steps involved in the derivation of the net ionic equation are:

• Write the general balanced chemical equation for HF + AgNO₃ reaction as,

• HF + AgNO₃ = HNO₃ + AgF

• Denote the chemical states (s, l , g or aq) of the compounds in the equation.

• HF (aq.) + AgNO₃ (aq.) = HNO₃ (aq.) + AgF (aq.)

• Break the electrolytes which are strong enough to produce ions in their aqueous solution to get the overall net ionic equation.

• H⁺ (aq.) + F^– (aq.) + Ag⁺ (aq.) + NO₃^– (aq.) = H⁺ (aq.) + NO₃^– (aq.) + Ag⁺ (aq.) + F^– (aq.)

• Cancel the ions present on the both sides of balanced equation to obtain the net ionic equation. Here all the ions cancel out each other; therefore, this becomes the case of No Reaction.

HF + AgNO₃ conjugate pairs

HF and AgNO₃ collectively do not have any conjugate pairs.

HF and AgNO₃ intermolecular forces

• The intermolecular force of attraction between HF molecules is dipole-dipole interaction.

• Ionic bonds are present in AgNO₃ because silver nitrate is an ionic compound.

• Silver fluoride (AgF) contains covalent bonds between its molecules.

• London dispersion forces and dipole-dipole interaction are present in HNO₃ molecules.

HF + AgNO₃ reaction enthalpy

The reaction enthalpy for HF + AgNO₃ is 43.39 kJ/mol. The standard enthalpy of formation for the compounds involved in the reaction are:

Compounds	Enthalpy of formation (in kJ/mol)
HF	-332.36
AgNO3	-124.39
HNO3	-206
AgF	-207.36

Reaction enthalpy (ΔH_f) = Standard enthalpy of formation (product – reactant)

Thus, ΔH_f = [-332.36 – 124.39] – [-207.36 – 206]

ΔH_f = 43.39 kJ/mol.

Is HF + AgNO₃ a buffer solution

HF + AgNO₃ is not a buffer solution as HF is a strong acid, but there must be present a weak acid with its conjugate base for the formation of a buffer solution.

Is HF + AgNO₃ a complete reaction

HF + AgNO₃ reaction is a complete reaction, there are no further steps left to have proceeded.

Is HF + AgNO₃ an exothermic or endothermic reaction

HF + AgNO₃ reaction is an endothermic reaction because the reaction enthalpy has a positive value.

Is HF + AgNO₃ a redox reaction

HF + AgNO₃ reaction is not a redox reaction as the oxidation number of all the atoms remain unchanged.

Is HF + AgNO₃ a precipitation reaction

HF + AgNO₃ reaction is not a precipitation reaction as no solid product is formed after the completion of the reaction.

Is HF + AgNO₃ reversible or irreversible reaction

HF + AgNO₃ reaction is an irreversible reaction because the HNO₃ formed does not react well with the AgF formed and the chemical reaction is a one-way reaction.

Is HF + AgNO₃ displacement reaction

HF + AgNO₃ reaction is a double displacement reaction in which the H and Ag atom displaces each other from their respective molecules to form new compounds.

Conclusion:

The article concludes that HF and AgNO₃ are both strong displacers mean they take part in a displacement reaction. The reaction is endothermic and heat is given to the reaction mixture. The net ionic equation calculation and titration are also not feasible.