Consider the half reaction below.

Upper C u superscript 2 plus (a q) plus 2 e superscript minus right arrow upper C u (s).

Which statement best describes what is taking place?
Copper is being oxidized.
Copper is being reduced.
Copper is losing electrons.
Copper is a reducing agent.

What would most likely be the transmittance of a 0.70 m solution of solute a?

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.

Which change will decrease the number of effective collisions during a chemical reaction? a. adding a catalyst b. increasing the surface area c. decreasing the temperature d. increasing the reactant concentrations e. increasing the volume of the reactants