Sulphuric acid flashcard

Front

What is the contact process in sulfuric acid production?

Back

The contact process is a method of producing sulfuric acid by oxidizing sulfur dioxide (SO2) to sulfur trioxide (SO3) using a catalyst.

Front

What is the role of sulfur dioxide in the contact process?

Back

Sulfur dioxide is the primary reactant that is oxidized to form sulfur trioxide in the contact process.

Front

What is the significance of the catalyst in the contact process?

Back

The catalyst, typically vanadium(V) oxide, increases the rate of the reaction between sulfur dioxide and oxygen without being consumed.

Front

What is the chemical equation for the oxidation of sulfur dioxide to sulfur trioxide?

Back

2 SO2(g) + O2(g) ⇌ 2 SO3(g) (This reaction is exothermic and reversible.)

Front

What are sulfa drugs and their relation to sulfur?

Back

Sulfa drugs are a class of antibiotics that contain sulfur and are used to treat bacterial infections.

Front

How does sulfur dioxide act as a food preservative?

Back

Sulfur dioxide inhibits the growth of bacteria and fungi, thus extending the shelf life of food products.

Front

What impurities are typically removed from sulfur dioxide before oxidation?

Back

Impurities such as dust, water vapor, and other gases that can poison the catalyst are removed.

Front

What is the importance of gas purification in the contact process?

Back

Gas purification is crucial to ensure the efficiency of the catalyst and to prevent deactivation.

Front

What is the role of vanadium(V) oxide in the contact process?

Back

Vanadium(V) oxide acts as a catalyst to facilitate the conversion of sulfur dioxide to sulfur trioxide.

Front

What are the environmental impacts of sulfur dioxide emissions?

Back

Sulfur dioxide can contribute to air pollution and acid rain, which can harm ecosystems and human health.