COMEDK2018ChemistryChemical Kinetics
The concentration of a reactant X decreases from 0.1 M to 0.025 M in 40 ~min . If the reaction follows I order kinetics, the rate of the reaction when the concentration of X is 0.01 M will be
Options
- A1.73 10⁻⁴ M min ⁻¹
- B3.47 10⁻⁴ M min ⁻¹
- C3.47 10⁻⁵ Mmin ⁻¹
- D1.73 10⁻⁵ M min ⁻¹
Correct answer
B. 3.47 10⁻⁴ M min ⁻¹
Step-by-step solution
For lst order reaction aligned k &= 2303 t [R₀ ] [R] = 2303 40 [ 0.1 0.025 ] &= 2303 40 4=0.0347 ~min ⁻¹ aligned Rate expression, r=k[A]=0.0347 0.01=3.47 10⁻⁴ Mimin ⁻¹ .