Final equation for the representation of rate of reaction in term of concentration is called
Correct answer: A. Rate law
- A. Rate law
- B. Rate constant
- C. Reaction rate
- D. Reaction order
Explanation
The rate law, or rate equation, states the rate as the rate constant multiplied by concentration terms raised to their experimentally determined powers. The rate constant is only the proportionality factor within it and the order is the exponent, so both are components of the rate law rather than the equation itself. Orders must be found by experiment, since they need not match the coefficients in the balanced equation.
This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Rate Constant
The rate constant, k, connects reaction rate with reactant concentrations in a rate law and has a value fixed for a particular reaction at a given temperature. Questions involve determining k from rate data, identifying its units for different reaction orders, and applying the Arrhenius equation to temperature changes.
Practise Reaction Kinetics
573 free Reaction Kinetics MCQs from Chemistry, 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 Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Rate Constant questions
The Arrhenius equation shows that the rate constant increases when
The half life of a first order reaction
The value of the rate constant k for a given reaction changes when
Ostwald's dilution law applicable to:
Rate of reaction when concentration of reactants are taken as unity is called_________________?
When a graph is plotted between 1/T on X-axis and log k on y-axis a straight line is obtained with a negative slope which has two end in__________________?