Catalysts Answers

Which part of the reaction energy diagram shown below would change if a catalyst were introduced?X A✔ BCD

Ethanol can react with hydrochloric acid to form chloroethane and water. When sulfuric acid is added, the reaction proceeds more quickly. The sulfuric acid is still present when the reaction is complete. Which statement correctly describes this reaction? ✔ Sulfuric acid is a catalyst.No catalyst is present.Water is a catalyst.

Sulfur dioxide gas can react in the presence of oxygen and vanadium(V) oxide to form sulfur trioxide. Sulfur trioxide is the only product of the reaction. Which statement correctly describes this reaction? Sulfur dioxide is a catalyst.X Sulfur trioxide is a catalyst.Oxygen is a catalyst.✔ Vanadium(V) oxide is a catalyst.

The addition of a strip of solid platinum metal to an aqueous solution of hydrogen peroxide increases the reaction rate of the decomposition reaction: 2 upper H subscript 2 upper O subscript 2 (a q) right arrow with upper P t (s) above it, upper 2 H subscript 2 upper O (l) plus upper O subscript 2 (g). X homogeneous✔ heterogeneous

Another way to catalyze the decomposition of H2O2 is to add a few drops of a solution containing iodide ion (I–): 2 upper H subscript 2 upper O subscript 2 (a q) right arrow with upper I superscript minus (a q) above it, 2 upper H subscript 2 upper O (l) plus upper O subscript 2 (g). ✔ homogeneousX heterogeneous