Question

Which of the following choices could not be able to explain the increase in the rate of a chemical reaction?

• A. Addition of a catalyst
• B. Someone increases the temperature of the lab thermostat
• C. The solid reactants are cut into smaller pieces before the reaction is started
• D. Some products are added to the reaction at its start from an external source
• E. The concentration of a gaseous reactant is increased before the start of the reaction

Answer 1

The correct option is D Some products are added to the reaction at its start from an external source

According to the Le Chatelier's principle if some products are added to reaction the reaction will in backward direction which decreases the forward rate of the reaction this implies that option (D) is correct.