A) A substance that stops a chemical reaction from occurring. B) A substance that increases the rate of a chemical reaction without being consumed in the process. C) A substance that reacts with another substance to form a new compound. D) A substance that decreases the rate of a chemical reaction.
A) A structural protein B) A biological catalyst C) A lipid molecule D) A neurotransmitter
A) To replace the catalyst in a reaction B) To enhance the catalytic activity of a catalyst C) To change the chemical nature of the catalyst D) To inhibit the catalytic activity of a catalyst
A) Making the reactions more hazardous B) Lowering the activation energy and increasing reaction rates C) Increasing the production cost D) Causing more waste to be generated
A) When a catalyst is deactivated by the reaction mixture B) When a byproduct of a reaction poisons the catalyst C) When a reactant of a reaction accelerates the reaction D) When a product of a reaction acts as a catalyst for that reaction
A) Magnesium oxide B) Silver C) Carbon nanotubes D) Enzymes
A) To increase the fuel efficiency of the engine B) To increase engine power C) To produce more greenhouse gases D) To reduce harmful emissions by converting them into less harmful substances
A) Temperature of the surrounding environment B) Vessel size in which the reaction takes place C) Surface area of the catalyst D) Color of the catalyst
A) The speed at which a catalyst degrades B) The ease of recycling the catalyst C) The ability of a catalyst to promote one specific reaction pathway over others D) The cost of the catalyst used in a reaction
A) Solid catalysts are always less efficient than homogeneous catalysts B) Solid catalysts are typically easier to separate from the reaction mixture C) Solid catalysts have a higher reaction selectivity D) Solid catalysts are never used in industrial processes
A) French, meaning 'to change'. B) Latin, meaning 'to speed up'. C) German, meaning 'to assist'. D) Greek, meaning 'loosen' or 'untie'.
A) mole per second B) katal C) enzyme unit D) turnover number (TON)
A) enzyme unit B) katal C) turnover number (TON) D) turn over frequency
A) sulfur dioxide (SO2) B) sulfur trioxide (SO3) C) nitric oxide (NO) D) oxygen (O2)
A) Oxygen B) Hydrogen C) Carbon dioxide D) Water
A) Ribozymes B) Enzybiotics C) Synzymes D) Abzymes
A) Wilhelm Ostwald B) Gottlieb Kirchhoff C) Vladimir Ipatieff D) Jöns Jakob Berzelius
A) It stabilizes the transition state more than the starting material B) It increases the difference in energy between starting materials and products C) It decreases the available energy from the environment D) It changes the thermodynamic barrier
A) Acetic acid B) High-fructose corn syrup C) Ethanol D) Benzene
A) Humphry Davy B) Gottlieb Kirchhoff C) Vladimir Ipatieff D) Johann Wolfgang Döbereiner
A) Johann Wolfgang Döbereiner B) Wilhelm Ostwald C) Humphry Davy D) Elizabeth Fulhame
A) Fischer–Tropsch synthesis B) Sabatier reaction C) Steam reforming D) Water-gas shift reaction
A) NO2 + SO2 → NO + SO3 B) 2 SO2 + O2 → 2 SO3 C) 2 NO + O2 → 2 NO2 D) NO + SO3 → NO2 + SO2
A) Inorganic catalysts B) Biocatalysts C) Acid–base catalysis D) Metal catalysts
A) $900 billion B) $500 billion C) $1 trillion D) $700 billion
A) Levofloxacin B) Noyori asymmetric hydrogenation C) (R)-1,2-Propandiol D) Hydroxyacetone
A) Chlorine gas B) Hydrogen peroxide C) Nitric oxide D) Singlet oxygen
A) Elizabeth Fulhame B) Humphry Davy C) Johann Wolfgang Döbereiner D) Eilhard Mitscherlich
A) Enantioselective catalysis B) Hydrogenation with nickel catalyst C) Friedel–Crafts reactions D) Biocatalysis
A) Acrylic acid B) Methanol C) Ammonia D) Terephthalic acid
A) Vladimir Ipatieff B) Wilhelm Ostwald C) Jöns Jakob Berzelius D) Elizabeth Fulhame
A) Gottlieb Kirchhoff B) Vladimir Ipatieff C) Wilhelm Ostwald D) Jöns Jakob Berzelius
A) Photocatalysts B) Biocatalysts C) Organometallic catalysts D) Electrocatalysts
A) Fischer–Tropsch synthesis B) Carbonylation processes C) Water-gas shift reaction D) Sabatier reaction
A) Eilhard Mitscherlich B) Elizabeth Fulhame C) Jöns Jakob Berzelius D) Gottlieb Kirchhoff
A) 1880s B) 1794 C) 1835 D) 1811 |