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CHEMISTRY / CHEMICAL KINETICS

Second Order Concentration Calculator

Calculate reactant concentration under a single-reactant second-order integrated rate law. Inspect the equation, substituted values, assumptions, and result in one guided chemistry workspace.

  • 01 Calculated in this tab
  • 02 Values stay in this browser tab
  • 03 Use boundary

Conversion input

Known value

Filter by unit name, symbol, or code. Your current selections remain available.

Preparing the calculator...

Use boundary

Calculation path

Calculate reactant concentration under a single-reactant second-order integrated rate law. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

1/[A]_t=kt+1/[A]_0

What you provide

What you provide

  • Initial reactant concentration expressed in mol/L, using the same scenario as the other inputs
  • Second-order rate constant expressed in L/(mol s), using the same scenario as the other inputs
  • Elapsed time expressed in s, using the same scenario as the other inputs

What you receive

What you receive

  • Reactant concentration in mol/L from the stated equation
  • A symbolic formula plus substituted working with your values
  • Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

The reaction follows the stated second-order law at constant conditions with no competing pathway.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

Reviewed reference factors