Under non-equilibrium conditions, what happens to the concentration of the reactants as a reaction progresses? It decreases true It increases false It remains constant false It becomes zero false Single The stoichiometric ratio of reactant X to product Y is 1:3. Which of the following is true about the rate of formation of Y? It is 3 times as fast as the rate of consumption of X true It remains just as fast as the rate of consumption of X false It is slower than the rate of consumption of X by a factor of 1/3 false The rate of formation of Y does not depend on the rate of formation of X false Single Liquid reagent Q is undergoing a decomposition reaction, producing gaseous product Z and liquid product W. What is the best way to determine how fast its reaction is progressing? Observe how the color of Q changes with time. false Measure the partial pressure of Z over time. false Measure the time when the vapors of Z begins to rise from Q's surface. true Measure the time it takes for Q to completely turn into gas false Single What do you call the reaction rate of a species at a particular moment in time? Instantaneous rate true Average rate false Specific rate false Rate constant false Single You were tasked to make a product using a certain pair of reagents at the soonest time possible. Why would it be better to react these reagents in a warmer vessel than a cooler vessel? The reaction rate would be faster in the warmer vessel. true It would be easier to initiate the reaction. false It would be easier to control the reaction. false It would be easier to keep the reaction rate constant. false Single What is the SI unit of reaction rate? moles per second false molar per second true molal per second false meters per second false Single What happens to the rate constant of a reaction when the concentration of the reactant involved is increased? The rate constant increases false The rate constant decreases false The rate constant becomes zero false The rate constant remains the same true Single Which of the following expressions denotes a decrease in the concentration of reagent P? ΔP false -ΔP false Δ[P] false -Δ[P] true Single According to the Kinetic Molecular Theory (KMT), products arise as a result of: The collision of reactants true The splitting of reactants false The gravitational attraction of reactants false The magnetic attraction of reactants false Single The reason why food spoils more easily at room temperature than when placed in a refrigerator is that: Cooking has made it more vulnerable to higher reaction rates by bacterial action false Refrigeration keeps food in a solid state, tougher against bacteria false Reaction rates induced by bacterial action decrease in cooler conditions true No bacterium will survive when food is placed in the refrigerator false Single