The reactions with low activation energy are _____________________?
Correct answer: D. Fast
- A. Always spontaneous
- B. Slow
- C. Non-spontaneous
- D. Fast
Explanation
The Arrhenius relation shows that a lower activation energy gives a larger rate constant at the same temperature, so the reaction is generally faster. Activation energy affects rate, whereas spontaneity depends on thermodynamic quantities such as Gibbs free energy.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Chemical Reaction Engineering
395 free Chemical Reaction Engineering MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Reaction Engineering questions
A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to _________________?
Chemical kinetics can predict the _______________ of a chemical reaction?
The reaction in which the rate equation corresponds to a stoichiometric equation, is called a/an _______________ reaction?
Rate of an autocatalytic chemical reaction is a function of ___________________?
Oil is hydrogenated using nickel catalyst in a __________________ reactor?
The reaction in which one of the products of reaction acts as a catalyst is called a/an ______________ reaction?