The rate law equation for a reaction is given as dx/dt= K[FeCl3][KI]2. The reaction is:
Correct answer: C. Third order
- A. First order
- B. Second order
- C. Third order
- D. Pseudo first order
Explanation
The order of reaction refers to the relationship between the rate of a chemical reaction and the concentration of the species taking part in it. In order to obtain the reaction order, the rate expression (or the rate equation) of the reaction in question must be obtained. The order of a rate law is the sum of the exponents of its concentration terms. To get the order of the reaction, exponents are added, i.e.1+2=3, therefore option C is correct.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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