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ChemBench
How temperature controls reaction speed.
The Arrhenius equation shows the rate constant depends exponentially on temperature — this is why a modest temperature increase (say, 10°C) can roughly double a reaction's rate, far more than a linear relationship would predict.
A higher activation energy makes a reaction more sensitive to temperature changes — this is the same math behind why refrigeration dramatically slows food spoilage reactions.
Molar mass of any chemical formula (e.g. H2O, C6H12O6, Ca(OH)2).
OpenPercent composition of an element within a chemical formula.
OpenSimplest whole-number ratio formula from elemental masses or percentages.
OpenPercent yield from actual and theoretical reaction yields.
OpenRate constant k
0.713
What you entered
k = A × e^(−Ea ÷ RT)
10000000000000 × e^(−75000 ÷ (8.314 × 298))= 7.1322e-1Result
Rate constant k: 0.713
At 298K, the rate constant k is 7.1322e-1.