mol/(L·min) to mol/(L·s) Reaction Rate Converter
Common Conversions
| mol/(L·min) | mol/(L·s) |
|---|---|
| 0.006 | 0.0001 |
| 0.03 | 0.0005 |
| 0.06 | 0.001 |
| 0.3 | 0.005 |
| 0.6 | 0.01 |
| 3 | 0.05 |
| 6 | 0.1 |
| 30 | 0.5 |
| 60 | 1 |
| 600 | 10 |
Why this conversion matters in chemistry
Bench kinetics analysis is where this conversion shows up. An in-situ IR time course gives an initial-rate plot in mol/(L·min) — a 0.005 mol/(L·min) pseudo first-order SN2 methylation rate, for example. The textbook Michaelis-Menten or enzyme-kinetics treatment expects mol/(L·s) on the Lineweaver-Burk plot — equivalently 8.33 × 10⁻⁵ mol/(L·s). The arithmetic: 60 s/min, leaving 1/60. In practice you reach for it when bench-instrument time scales need to land in the SI per-second form publication-ready kinetics expects.
Formula
Where the factor comes from
Only the time unit in the denominator moves. Both sides express amount of substance per volume per time, and the mol and the L stand unchanged on either side of the equals sign, canceling identically. What is left is the relation between the minute and the second. The second is defined by fixing the cesium-133 hyperfine transition frequency at 9192631770 hertz; the minute, though not itself an SI unit, is accepted for use alongside the SI at exactly 60 of those seconds. Write that as a unity factor of 1 min per 60 s, multiply the rate by it, and the minute in the rate's denominator cancels against the minute in the factor's numerator, leaving one sixtieth of the original number per second. No experiment sits behind the 60 — it is inherited from sexagesimal timekeeping and fixed by convention.
Precision and significant figures
The 60 is exact and moves no significant figures: 0.005 mol/(L·min) becomes 8.33 × 10⁻⁵ mol/(L·s), three figures in and three out. Whether three were earned is the harder question. An initial rate taken as the slope of the first few points of a time course usually supports two, occasionally three with a well-sampled trace and a stable baseline. Temperature control matters more here than digits do. For an activation energy near 50 kJ/mol at room temperature, a single degree of drift shifts the rate constant by about seven percent, which swamps the fourth figure and most of the third. Let the bath equilibrate before worrying about the arithmetic.
Worked Examples
A fast ionic reaction in aqueous solution.
A moderate organic-reaction rate.
A catalyzed decomposition reaction.
Common mistakes
The 60 applied in the wrong direction
A rate per minute is a larger number than the same rate per second, so this conversion has to make it smaller. The instinct built up from converting durations pushes the other way. One check settles it every time: if the per-second figure came out larger than the per-minute figure you started with, the factor went in upside down.
Clock timestamps read as decimal minutes
A logger writing elapsed time as 1:30 means ninety seconds, or 1.5 minutes, not 1.30. Feeding the raw string into a rate calculation introduces an error that grows through the run and bends what should be a straight initial-rate plot into a curve. Convert the whole time column into one decimal unit before fitting anything to it.
Half-life converted the same way
A rate in per-minute units divides by 60 to reach per-second, but a half-life measured in minutes multiplies by 60 to reach seconds. The two sit on opposite sides of a reciprocal. Applying the same operation to both puts a factor of 3600 between a first-order rate constant and the half-life it is supposed to reproduce.