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In a chemical reaction at constant temperature the addition of a catalyst A - VCE - SSCE Chemistry - Question 19 - 2004 - Paper 1
Question 19
In a chemical reaction at constant temperature the addition of a catalyst A. affects the equilibrium constant. B. provides an alternative reaction pathway. C. increa... show full transcript
Worked Solution & Example Answer:In a chemical reaction at constant temperature the addition of a catalyst A - VCE - SSCE Chemistry - Question 19 - 2004 - Paper 1
Step 1
B. provides an alternative reaction pathway.
Answer
A catalyst works by lowering the activation energy of a reaction, which provides an alternative pathway for the reaction to occur. This means that more molecules can participate in the reaction at a lower energy level, effectively increasing the rate at which equilibrium is reached without changing the equilibrium constant or percentage yield at equilibrium.