Question

Which of the following reactions is a redox reaction? Select one: O a. SO3 + H2O + H2SO4 O b. CaCO3 + CaO + CO2 O c. 2KCIO3 → 2KCl + 302 d. more than one correct response (more than one reaction is a redox reaction) O e. no correct response (none of the reactions are redox) Which statement regarding chemical reaction rates is correct? Select one: O a. The reaction rate decreases with increasing temperature O b. Catalysts provide an alternative reaction pathway that increases the activation energy O c. The reaction rate is fastest between solid-state reactants Od Catalysts provide an alternative reaction pathway that decreases the activation energy O e. The reaction rate will decrease with an increase in reactant concentration Which chemical species is oxidized and which is the oxidizing agent in the following reaction? Cu + 2AgNO, — 2Ag + Cu(NO) Select one: O a. Cu is oxidized and AgNO3 is the oxidizing agent O b. Cu is the oxidizing agent and AgNO3 is oxidized c. Ag is the oxidizing agent and Cu(NO3)2 is oxidized O d. Ag is oxidized and Cu(NO3)2 is the oxidizing agent Oe. This is not a redox reaction.

Answer 1

For the first question, the correct answer is d. There is more than one correct response, meaning that more than one reaction is a redox reaction.

Regarding the second question, the correct statement is d. Catalysts provide an alternative reaction pathway that decreases the activation energy.

In the third question, the correct answer is a. Cu is oxidized, and AgNO3 is the oxidizing agent.