COMEDK2016ChemistryChemical Kinetics
The velocity constant of a reaction at 290 ~K was found to be 3.2 10⁻³ ~s ⁻¹ . When the temperature is raised to 310 ~K , it will be about
Options
- A9.6 10⁻³
- B1.28 10⁻²
- C6.4 10⁻³
- D3.2 10⁻⁴
Correct answer
B. 1.28 10⁻²
Step-by-step solution
For every 10 ~K rise in temperature, rate of reaction double. From 298 ~K to 310 ~K , the reaction rate became (2)² times i.e., 4 times. k=3.2 10⁻³ ~s ⁻¹ 4=1.28 10⁻² ~s ⁻¹