Question

2) in a catalyzed chemical reaction, one function of a catalyst is to A) increase the number of successful reactant collisions. B) decrease the concentration of reactants. change the equilibrium concentrations of the products and react D) increase the energy given off during the reaction E) increase the temperature at which the reaction is carried out. 3) Refrigerating perishable foods affects biochemical reactions by A) increasing concentrations of antioxidants. B) removing bacteria. C) decreasing the rate of reactions affecting spoilage. w catalyzing the removal of harmful chemicals from the foods E) improving the appearance of the foods. 4) The metal Platinum used in a catalytic converter i oxygen produces A) carbon dioxide B) carbon and more oxygen catalytic converter in an automobile, the reaction of carbon monoxide with C) water D) methane E) nitrogen oxide 5) A chemical reaction has reached equilibrium when A) the concentrations of reactants and products are equal. B) all reactants have been converted to products. C) all products have been removed from the reaction mixture. D) the catalyst has been used up. E) the rate of the forward reaction equals the rate of the reverse reaction

Answer 1

(2 0 Increase the everpy given off during reaction Catalyst- lowers the actuation evergy. 3 o decreasing rate of reaction affecting spoilage during referigeration, temperature is lowered , hence growth of bacteria is also lowered! 4 20+ 0 pt, 2002 calatytie converter en used to enteloped oxidation & reduction of toxic by products (NOx Co, Hes) of fuel to less bazardons substance

lg co2, H₂O1g), Nig, C Ca At qe rate of forward reaction = date of backward reaction rate of forward reaction equals rate of back werd reaction