Use this chemistry calculator to reproduce a named relationship with explicit quantities and units for study, laboratory planning, or an independent numerical check.

Capacity factor k1

Required number input.

Capacity factor k2

Required number input.

Compute the chromatographic capacity ratio from two adjusted capacity factors, k2 divided by k1. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Capacity ratio

The resulting capacity ratio returned as a number.

• Chromatographic plate, resolution, retention, and peak-shape formulas summarize an observed chromatogram. They do not model detector response, integration choices, extra-column broadening, gradient elution, overload, or uncertainty in locating peak boundaries.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check units and significant figures, compare the result with limiting cases, and use measured or source-specific constants where available. Laboratory, safety, and regulatory decisions require validated methods and appropriate uncertainty analysis.

• Retention Factor k

  Compute the chromatographic retention factor k as adjusted retention time divided by the column dead time.

• Activation Energy Two-Temperature

  Compute activation energy in J/mol from rate constants at two temperatures as R times ln(k2/k1) over one over T1 minus one over T2.

• Capacity Factor k'

  Compute the capacity factor k-prime as adjusted retention time over dead time for a retained analyte.