15 Facts on HF + CaCO3: What, How To Balance & FAQs

Calcium Carbonate and Hydrogen fluoride are inorganic compounds with chemical formulas, CaCO₃ and HF, respectively. Let us explore more about the reaction between CaCO₃ and HF.

HF is a weak acid and CaCO₃ is neither acid nor base. In addition to being a food coloring and firming agent, it is a fertilizer. HF is a potent inorganic acid that is colorless and dissolves in water. HF has multiple applications in industries like electronics, glass etching, and fluorescent light bulbs.

In this article will learn how to balance the HF + CaCO₃ chemical equation, intermolecular forces, and facts about the reaction enthalpy in this article.

What is the product of HF and CaCO₃?

Calcium Fluoride, water (H₂O) and Carbon Dioxide (CO₂) gas are the products of HF +CaCO₃.

2HF +CaCO₃ = CO₂ +CaF₂ + H₂O

What type of reaction is HF + CaCO₃

HF +CaCO₃ is an acid-base and neutralization reaction because a strong acid neutralizes a weak base to generate salt and water.

How to balance HF + CaCO₃

The balanced chemical equation for the above-mentioned reactants is: 2HF +CaCO₃ = CO₂ +CaF₂ + H₂O

• The general equation is HF +CaCO₃ = CO₂ +CaF₂ + H₂O

• Next, check the number of atoms of Hydrogen, Fluorine, Calcium, Carbon, and Oxygen on both sides, which is as follows:

• As we can see, we need to balance the number of atoms for Hydrogen and Fluorine element. Hence, we need to add “2” in front of the HF reactant.

• So, the balanced chemical equation is 2HF +CaCO₃ = CO₂ +CaF₂ + H₂O

HF + CaCO₃ titration

The titration of HF and CaCO₃ is not possible as CaCO₃ is present in the form of metal salt which is a solid, hence cannot be titrated.

HF + CaCO₃ net ionic equation

The ionic reaction of HF + CaCO₃

F^– + CO₃ ^2- = F₂^– +OH^– + CO₃^2-

The net ionic equation for 2HF +CaCO₃ = CO₂ +CaF₂ + H₂O is written in three steps:

• Write the states and separate the soluble ionic compounds into their ions (these are the strong electrolytes denoted by an (aq)).
• Complete ionic equation: CaCO₃ (s) + 2H⁺ (aq) + 2F^– (aq) → Ca²+ (aq) + 2HF^– (aq) + CO₂ (g) + H₂O (l)
• Finally, spectator ions are removed. These ions can be found on both sides of the ionic equation. 

HF + CaCO₃ conjugate pairs

HF + CaCO₃ reaction has the following conjugate pairs,

• F^– is the conjugate base of HF and it further does not have conjugate pair due to the absence of a proton.
• Conjugate acid-base pair for CaCO₃ is not possible beacause of absence of proton.

HF and CaCO₃ intermolecular forces

The forces between HF and CaCO₃ are as follows:
• Forces acting on HF include permanent dipole-dipole, dispersion forces and hydrogen bonding.
• CaCO₃ contains electrostatic attraction.

HF + CaCO₃ reaction enthalpy

The reaction enthalpy of HF and CaCO₃ is -258.27 kJ/mol. The standard enthalpy of formation is calculated as:

Change in reaction enthalpy = Sum of enthalpies in product side – sum of enthalpies in reactant side.
Enthalpy change = (-1120-285.83-393.5) – (1219.97-321.09) = -258.27 kJ/mol.

Is HF + CaCO₃ a buffer solution

HF + CaCO₃ is not a buffer solution because HF is a strong acid.

Is HF + CaCO₃ a complete reaction

HF + CaCO₃ is a complete reaction as it dissociate completely in the solution.

Is HF + CaCO₃ an exothermic reaction?

HF + CaCO₃ is an exothermic reaction because the calculated enthalpy is negative which means heat is given out.

Is HF + CaCO₃ a redox reaction

HF + CaCO₃ is a redox reaction as the oxidation state of Hydrogen and Fluoride changes in the reaction.

Is HF + CaCO₃ a precipitation reaction

HF + CaCO₃ is not a precipitation reaction because there is a formation of precipitate CaF₂.

Is HF + CaCO₃ irreversible reaction?

HF + CaCO₃ is an irreversible reaction because we can not reverse the direction of the reaction.

Is HF + CaCO₃ displacement reaction

HF + CaCO₃ is not a displacement reaction because new compound is formed without exchanging ions.

Conclusion

Hydrogen fluoride with calcium carbonate involves the formation of a neutral salt, CaF₂, gas, and liquid water. CaF₂ is used as dense aqueous solutions in drilling fluids, and as a food preservative. CO₂ is a crucial industrial material used as an inert gas in pressurizing gas in an oil refinery.