Manipal MET2013ChemistryChemical Kinetics
Consider the following reaction in an aqueous solution I ⁻(a q)+ Cl ⁻ IO ⁻(a q)+ Cl ⁻(a q) and the following initial concentration and initial rate data for this reaction. array c|c|c|c Exp. No & [1⁻ ] M & [ OCl ⁻ ] M & Initial rate Ms ⁻¹ 1. & 0.1000 & 0.0500 & 3.05 10⁻⁴ 2. & 0.2000 & 0.0500 & 6.10 10⁻⁴ 3. & 0.3000 & 0.0100 & 1.83 10⁻⁴ 4. & 0.3000 & 0.0200 & 3.66 10⁻⁴ array Which of the following is the correct rate
Options
- ARate =k [I⁻ ]^2 [ OCl ⁻ ]
- BRate =k [ OCl ⁻ ]
- CRat =k [I⁻ ]^2
- DRate =k [I⁻ ] [ OCl ⁻ ]
Correct answer
D. Rate =k [I⁻ ] [ OCl ⁻ ]
Step-by-step solution
From experiment no -3 and 4, doubling [ OCl ⁻ ] doubles the rate; i.e., order with respect to OCl ⁻ is one. Also, from experiment no 1 and 2, doubes the concentration of I⁻ double the rate, i.e. order with respect tol- is also one. rate =k [I⁻ ] [ OCl ⁻ ]