Chemical Kinetics Calculator

Calculate rate constants, half-life, and concentrations for zero, first, and second order reactions.

Reaction Kinetics

Reaction Order:

Solve For:

1 M
0.01 M10 M
M
1
0.01100
0.5 M
0.001 M1 M
M

Rate Constant (k)

6.9315e-1

Half-Life (t1/2)
1.0000
Initial Rate
0.693147 M/s
% Remaining
50.00%
% Reacted
50.00%

Rate Law:

Rate = k[A]

Integrated Rate Law:

ln[A] = ln[A]0 - kt

Half-Life Formula:

t1/2 = ln(2) / k = 0.693 / k

Reaction Order Comparison

PropertyZero OrderFirst OrderSecond Order
Rate LawRate = kRate = k[A]Rate = k[A]^2
Units of kM/s1/s1/(M*s)
Linear Plot[A] vs tln[A] vs t1/[A] vs t
Half-Life Depends On[A]0Independent of [A]0[A]0