When catalysts and reactants are in more than one phase it is________________?
Correct answer: B. Heterogeneous catalysis
- A. Homogeneous catalysis
- B. Heterogeneous catalysis
- C. Catalysis
- D. Ea
Explanation
When the catalyst and reactants are present in different physical phases, the process is heterogeneous catalysis. For example, a solid catalyst may catalyse a reaction between gases. Students may choose a by focusing on the word catalysis alone, but homogeneous catalysis requires the catalyst and reactants to be in the same phase.
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About Enzymes as Biocatalysts
Enzymes are protein or RNA biocatalysts that lower activation energy without being consumed, and their active sites bind specific substrates. The topic covers the lock and key and induced fit models, effects of temperature, pH and substrate concentration, cofactors, enzyme specificity, and competitive versus non-competitive inhibition.
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