Kinetics Calculator

Units follow the order: mol/(L s) for zero order, 1/s for first order, L/(mol s) for second order.
Concentration at t
0.367879 mol/L
Reaction Kinetics Calculator
Rate constant k
0.1
Units of k
1/s
Half-life
6.931472 s
Reaction rate
0.036788 mol/(L*s)
Fraction of reactant remaining
0.367879
Elapsed time
10 s
Worked out from OpenStax Chemistry 2e, section 12.4 Integrated Rate Laws and 3 other sources.
These are idealised single-reactant rate laws. Reaction order, mechanism and thermal behaviour must be established experimentally before the results are used for process design or safety assessment.

How this is worked out

4 steps
  1. First order: [A]t = [A]0 e^(-k t) = 1 x e^(-0.1 x 10) = 0.36787944117144233 mol/L.
  2. Fraction remaining: 0.36787944117144233 / 1 = 0.36787944117144233.
  3. Half-life: 6.931471805599452 s.
  4. Instantaneous rate at t: k [A]^1 = 0.036787944117144235 mol/(L*s).

Results are general information, not financial, tax, legal, medical or engineering advice.