Question

The reaction 2NaCl + H2SO4 → Na2So4 + 2HCl is a __________________ reaction.

A) synthesis

B) decomposition

C) single replacement

D) double replacement

Answer 1

The chemical reaction 2NaCl + H2SO4 → Na2SO4 + 2HCl is categorized as a double replacement reaction because two compounds exchange parts to form two new compounds.

Step-by-step explanation:

The reaction 2NaCl + H2SO4 → Na2SO4 + 2HCl is a double replacement reaction. In such reactions, compounds exchange partners, typically resulting in new compound combinations. The reactants in a double replacement reaction are usually ionic compounds or acids, as seen in this example. Moreover, this type of reaction can produce different types of products, such as precipitates, gas, or molecular compounds like water, depending on the solubility of the products formed.

Answer 2

The given reaction 2NaCl + H₂SO₄ → Na₂SO₄ + 2HCl is a double replacement reaction, as ions from two different compounds switch places to form two new compounds. The correct answer is D) double replacement.

Step-by-step explanation:

The given chemical equation, 2NaCl + H₂SO₄ → Na₂SO₄ + 2HCl, represents a double replacement reaction. In a double replacement reaction, the cations and anions of two different compounds switch places to form new compounds.

In this case, sodium ions (Na⁺) from sodium chloride (NaCl) combine with sulfate ions (SO₄²⁻) from sulfuric acid (H₂SO₄) to form sodium sulfate (Na₂SO₄), while chloride ions (Cl⁻) from sodium chloride combine with hydrogen ions (H⁺) from sulfuric acid to form hydrochloric acid 2HCl).

Therefore, the correct answer is:

D) Double replacement