15 Facts on HF + BaCl2: What, How To Balance & FAQs

Hydrofluoric acid and Barium chloride are represented by molecular formulas HF and BaCl₂ respectively. HF is a hydrogen halide and BaCl₂ is a water soluble salt. Let us study them.

Barium chloride is a neutral acid, a product of Barium (a strong base) and Hydrochloric acid (a strong acid). While Hydrochloric acid is a strong acid known as muriatic acid used for bleaching.

Here we will explore the type of reaction, nature of reaction and various aspects of HF and BaCl₂ ,the conjugate pairs and net ionic equation too.

What is the product of HF and BaCl₂?

Barium fluoride(BaF₂) and Hydrochloric acid(HCl) are the product formed by reaction between HF and BaCl₂.
2HF+ BaCl₂→BaF₂+2HCl

What type of reaction is HF + BaCl₂?

The reaction between HF and BaCl₂ is a double displacement type of reaction.The anionic interaction between Ba²⁺ and F^– ions causes exchange between compound leading to formation of the product Barium Fluoride and Hydrochloric acid.

How to balance HF + BaCl₂?

The reaction between HF and BaCl₂ is not balanced on it’s own as,

HF+ BaCl₂→BaF₂+HCl

• It can be balanced by labelling each compound with variable a & b.
• aHF + BaCl₂ →bBaF + HCl
• When HF is multipled by 2 we get 2HF + BaCl₂ → BaF₂ + HCl
• Now we will multiply HCl with 2 , so that both sides get equivalent number of moles.
• Substitution and equating both side result in balanced reaction.
• And thus finally the balanced reaction is obtained.
• 2HF+ BaCl₂→BaF₂+2HCl

HF + BaCl₂ titration

The titration between HF and BaCl₂ is type of acid-base titration.

Apparatus used:

Beaker, burette, conical flask, and measuring cylinder.

Indicator:

Methyl orange is the indicator used.

Procedure:

• Make a batch solution of 250ml by adding HF and BaCl₂.
• Measure the solutions with the cylinder.
• Now add a few drops of the indicator until the colour changes from red to yellow varying upon the strength of acid.
• At the end salt of BaCl₂ precipitates in the flask.

HF and BaCl₂ net ionic equation

The complete ionic equation is given as follows:-
2H⁺_(aq) + 2F^–_(aq) + Ba₂⁺_(aq) + 2Cl^–_(aq) → BaF_2(s) + 2H⁺_(aq) + 2Cl^–_(aq)
These steps are involved to derive the net ionic equation:

• To write the balanced molecular equation along with the physical state .
• Then the ionic form of each of them existing in aqueous form and capable of forming dissociation is mentioned.
• The recurring ions are removed and the ions that are involved in the reaction are only included in the net ionic equation.
• The net ionic equation is as given-
• 2F^–_(aq) + Ba₂⁺_(aq) = BaF_2(s)

HF and BaCl₂ conjugate pairs

The conjugate pairs present in HF and BaCl₂ are as follows:-

• The conjugate acid in HF is H₂F⁺ i.e. Fluoronium ion and F^– is the base.
• BaCl₂ is a neutral salt , it does not shows any conjugate acid-base pair.

HF and BaCl₂ intermolecular forces

The intermolecular forces present in HF and BaCl₂ are as follows:-

• Hydrogen bonding and dipole-dipole forces are the intermolecular forces present.HF is ionic in nature. In aqueous solution HF gets polarized and form H⁺ and F^– ions.
• Barium Chloride is a ionic compound as ionic bond exist between Barium cation(Ba₂⁺) and Chloride anions(Cl^–).

HF and BaCl₂ reaction enthalpy

The reaction enthalpy of HF and BaCl₂ is -803.9 kJ/mol.

• The enthalpy is calculated by the formula H=U+pV where H equals to the sum of the internal energy E and the product of the pressure P and volume, V, of the system: H = E + PV.
• After calculating and putting the value in formula we get it as below:-
• [(-1207.1) + 2(-92.3)] – [ 2(-273.3) + (-20.6)] = 83.9kJ/mol.

Is HF and BaCl₂ a buffer solution

HF and BaCl₂ is not a buffer solution since HF is a strong acid and BaCl₂ is a neutral salt.

Is HF and BaCl₂ a complete reaction?

HF and BaCl₂ is not a complete reaction as the precipitate is remained in the reaction. Poor dissociation factor contribute to make this reaction incomplete.

Is HF and BaCl₂ an exothermic or endothermic reaction?

The reaction between HF and BaCl₂ is exothermic reaction as heat is given out during the reaction. The negative sign in the enthalpy reaction indicates that the energy is released during the process.

Is HF and BaCl₂ a redox reaction?

The reaction between HF and BaCl₂ is not a redox reaction. As the phenomenon of neither oxidation nor reduction takes place simultaneously in this reaction.

Is HF and BaCl₂ a precipitation reaction?

The reaction between HF and BaCl₂ is a precipitation reaction. As the product BaF₂ formed during the reaction is solid. Indicating that the precipitate remains.

Is HF and BaCl₂ reversible or irreversible reaction?

HF and BaCl2 is an irreversible reaction as it does not occur in both ways. While the product formed cannot be retained to its original form. The precipitate BaF₂ is insoluble marking it as irreversible reaction.

Is HF and BaCl₂ displacement reaction?

The reaction between HF and BaCl₂ is not a simple displacement reaction. As there is displacement twice between HF and BaCl₂ compounds. The anionic interchange between HF and BaCl₂ makes it double displacement reaction.

Conclusion

Barium chloride or Barium dichloride is a white crystal solid, odourless in nature.BaCl₂ is result of direct reaction between Barium and chloride.HF is mainly used as precursor for the formation of organofluoric compounds. Both HF and BaCl₂ has many applications in various industries.