15 Facts on H2SO4+NaF: What, How To Balance & FAQs

Sulphuric acid reacts with natrium fluoride to form the salt cake. Let us study H₂SO₄ + Naf reaction in detail.

Sulfuric acid is a very important industrial chemical. It is usually used in the production of fertilizers and is crucial in chemical synthesis, oil refining, wastewater processing, and mineral processing. Sodium fluoride is a colorless, white solid used in the fluoridation of drinking water in trace amounts.

This article studies the various fact of H₂SO₄ + NaF reaction like its product, enthalpy of reaction, reaction type, conjugate pairs, ionic equation, etc.

What is the product of H₂SO₄ and NaF?

Sulfuric acid (H₂SO₄) reacts with sodium fluoride (NaF) to form sodium sulfate (Na₂SO₄), and hydrofluoric acid (NaF).

H₂SO₄ + NaF → Na₂SO₄ + HF

What type of reaction is H₂SO₄ + NaF?

H₂SO₄ + NaF is a double displacement, endothermic and precipitate reaction.

How to balance H₂SO₄ + NaF?

The given chemical reaction is balanced by following steps:

• The unbalanced chemical reaction is written as:
• H₂SO_{4 +} NaF → Na₂SO₄ + HF              
• The respective number of moles of each element are tabulated as shown below:

• The reaction is balanced when the number of moles of each element at left hand side are equal to the number of moles of each element at right hand side.
• Here moles of Na and H are unbalanced on either side.
• To balance the reaction, multiply 2 each with NaF on reactant side and HF on product side
• The Balanced chemical reaction is
• H₂SO₄ + 2NaF → Na₂SO₄ + 2HF      

H₂SO₄ + NaF Titration

H₂SO_{4 +} NaF titration is not possible due to the formation of salt.

H₂SO₄ + NaF Net ionic equation

The net ionic equation for H₂SO₄ + NaF is not possible since all ions are spectator ions in the reaction as shown below:

2H⁺(aq) + SO₄^2-(aq) + 2Na⁺(aq) + 2F^–(aq) = 2H⁺(aq) + 2F^–(aq) + 2Na⁺(aq) + SO₄^2-(aq)

H₂SO₄ + NaF conjugate pairs

The conjugate acid-base pairs for H₂SO₄ + NaF are,

• Conjugate acid of H₂SO₄ = H₃O⁺
• Conjugate base of H₂SO₄ = HSO₄^– 
• Conjugate base of NaF  = F^–

H₂SO₄ + NaF intermolecular forces

The intermolecular forces on H₂SO₄ and NaF are,

• Hydrogen bond, Van der Waals dispersion forces, and Dipole-dipole interaction, acts on H₂SO₄.
• Ion- Ion interactions act on NaF.

H₂SO₄ + NaF reaction enthalpy

H₂SO₄ + NaF change in reaction enthalpy is: 368.77 kJ/mol

Follow the below steps to calculate the change in reaction enthalpy –

• The reaction enthalpy of formation of each compound on the either side of the reaction is tabulated down as:

• Change in reaction enthalpy = Sum of enthalpies in product side – sum of enthalpies in reactant side.
• Change in Enthalpy = (-1387.1+273) – (-909.27-573.6) = 368.77 kJ/mol

Is H₂SO₄ + NaFa buffer solution?

H₂SO₄ + NaF reaction is not a buffer solution since presence of strong H₂SO₄ acid takes place during the reaction.

Is H₂SO₄ + NaF a complete reaction?

H₂SO₄ + NaF is a defined as a complete reaction as at equilibrium complete moles of reactant are consumed into products.

Is H₂SO₄ + NaF an exothermic or endothermic reaction?

H₂SO₄ + NaF is an endothermic reaction because the change in enthalpy is +368.77 kJ/mol, which is positive thereby decreasing the temperature.

Is H₂SO₄ + NaF a redox reaction?

H₂SO₄ + NaF is not redox reaction as no change in the oxidation state is observed.

Is H₂SO₄ + NaF a precipitation reaction?

H₂SO₄ + NaF is a precipitation reaction, due to the formation of Na₂SO₄, which is sodium salt of sulfuric acid, in the reaction.

Is H₂SO₄ + NaF reversible or irreversible reaction?

H₂SO₄ + NaF is an irreversible reaction, and can only be reversed when there is drastic change in experiment temperature or pressure.

Is H₂SO₄ + NaF displacement reaction?

H₂SO₄ + NaF reaction is a double displacement (metathesis) reaction. H₂ is traded with F to form HF and Na if traded with SO₄ to form Na₂SO₄.

Conclusion

Reaction of sulfuric acid with sodium fluoride involves formation basic salt and sodium sulphate. Sodium sulfate is mainly used as catalyst in Kraft process of paper pulping, in manufacturing of detergents. Hydrogen fluoride is a colorless liquid or gas used as important feedstock in many pharmaceuticals and petrochemical industries