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

H₂SO₄ is categorized as a strong acid. Let us discuss what will happen when H₂SO₄ reacts with NaI.

H₂SO₄, also known as sulphuric acid, has a molecular mass of 98 g/mol and is a colorless, odorless liquid that is miscible with water. Sodium iodide is formed by the reaction of sodium metal and iodine. These two components react to generate fumes of hydrogen iodide and the color of the resultant solution is red.

Let us discuss the product formed when H₂SO₄ reacts with NaI, the type of reaction, the net ionic equation and many other related topics in this article.

What is the product of H₂SO₄ and NaI ?

Sulphuric acid reacts with sodium iodide to give sodium sulphate, hydrogen sulphide, iodine and water.

H₂SO₄ + NaI = Na₂SO₄ + H₂S + I₂ + H₂O

What type of reaction is H₂SO₄ + NaI ?

H₂SO₄ + NaI is an acid-base reaction because salt and water are produced when strong acid and weak base interact with each other.

How to balance H₂SO₄ + NaI ?

The following steps need to be followed while balancing a chemical equation.

• Given below is an unbalanced chemical reaction of H₂SO₄ and Li₂O,
  H₂SO₄ + NaI = Na₂SO₄ + H₂S + I₂ + H₂O

• Record the moles of each element on the reactant and product sides.

• Now, the number of moles present on each side of the reactant and product must be equal in order to balance the chemical equation. In this case, the number of moles of each element is varied.

• A chemical equation must be balanced by performing the following actions.
  H₂SO₄ in the reactant side should be multiplied by 5.
  NaI in the reactant side should be multiplied by 8.
  Na₂SO₄ in the product side should be multiplied by 4.
  I₂ in the product side should be multiplied by 4.
  H₂O in the product side should be multiplied by 4.

• Finally, the balanced chemical equation is,

5H₂SO₄ + 8NaI = 4Na₂SO₄ + H₂S(g) + 4I₂ + 4H₂O

H₂SO₄ + NaI titration

The titration of H₂SO₄ and NaI will yield noticeable results.

Apparatus

We need a burette, conical flask, burette holder, volumetric flask, and beakers for this titration.

Indicator

The phenolphthalein or methyl orange indicator can be used because it is a strong acid versus weak base reaction, and its endpoint is pink to colorless.

Procedure

The burette was filled with standardized H₂SO₄ and NaI was taken in a conical flask along with the respective indicator. H₂SO₄ is added dropwise to the conical flask and the flask was shaking constantly. After a certain time when the endpoint arrived, indicator changes its color and the reaction was done.

We repeat the titration several times for better results and then we estimate sodium sulfate quantity by the formula V₁S₁ = V₂S₂.

H₂SO₄ + NaI net ionic equation

The net ionic equation for the reaction of H₂SO₄ + NaI will be :

2H⁺ + SO₄^2- + = Na⁺ + SO₄^2- + 4H⁺ + O^2- + S^2- + I^–

H₂SO₄ + NaI conjugate pairs

The conjugate acid-base pairs of the reaction H₂SO₄ + NaI are:

• H₂SO₄ (Conjugate base) = HSO₄^–
• H₂O (Conjugate base) = OH^–

H₂SO₄ and NaI intermolecular forces

The intermolecular force present in H₂SO₄ is due to the strong electrostatic force between a proton and sulfate ions. H₂SO₄ shows ionic character in an aqueous medium and acts as a good dehydrating agent.

Is H₂SO₄ + NaI a buffer solution ?

H₂SO₄ + NaI is not a buffer solution due to the presence of the strong acid H₂SO₄.

Is H₂SO₄ + NaI a complete reaction ?

The reaction between H₂SO₄ and NaI is complete. Since all of the reactant’s moles are completely converted and consumed by the product at equilibrium.

Is H₂SO₄ + NaI an exothermic or endothermic reaction ?

The reaction between H₂SO₄ and NaI is exothermic as the energy generated during the reaction is sufficient to carry out the entire reaction. There is no requirement for extra energy.

Is H₂SO₄ + NaI a redox reaction ?

H₂SO₄ + NaI is not a redox reaction because there is no change in the oxidation state of any element either in the reactant or product side.

Is H₂SO₄ + NaI a precipitation reaction ?

The reaction H₂SO₄ + NaI is a precipitation reaction because Na₂SO₄ gets precipitated in the solution and is not soluble in the reaction mixture.

Is H₂SO₄ + NaI reversible or irreversible reaction ?

H₂SO₄ + NaI reaction is a reversible reaction as the products reached an equilibrium in certain conditions.

Is H₂SO₄ + NaI displacement reaction ?

H₂SO₄ and NaI is a double displacement reaction because the sulfate ion is transferred from H₂SO₄ to Na₂SO₄ and the Hydrogen ion is transferred from H₂SO₄ to H₂O.

Conclusion

The reaction’s byproduct, sodium sulphate, is used to dry organic liquids. Anhydrous sulfate is best described as a white, crystalline solid. It is used as a filler in powder form in household laundry detergent.

Mansi Sharma

Hello, viewers I am Mansi Sharma. I’m a medicinal chemist with a postgraduate degree. I love all facets of chemistry, and I do think that it is present everywhere, so let us explore what chemistry is all about together.
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