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