Equation 5 · Part 1 · Chemical Dynamics and Catalysis in Practice: An Advanced Technical Guide
Symbol K_i
What this part means
is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol K_i→Article meaning
The passage around this formula
Here r is the overall reaction rate, is the rate constant of step i , and the partial derivative is taken holding the equilibrium constant of that step fixed (so that only kinetics, not thermodynamics, is perturbed) and all other rate constants constant. This equation matters because it is the formal object the rest of this section’s isotope analysis is trying to estimate indirectly — DRC values are rarely measured directly; they are inferred from how observables like isotope ratios and apparent activation energies respond to controlled perturbations.
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
See this notation across published equations →
Sources cited in the article section
These citations provide research context; check each source for the exact claim it supports.