A first-order reaction has an initial concentration of 0.5 mol L⁻¹ and a rate constant of 0.0693 min⁻¹. What is the conc
[R] = 0.5 / 4 = 0.125 mol L⁻¹.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Order and Molecularity and Units of Rate Constant