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반응지수 계산기

반응지수 Q를 계산하고 Keq와 비교하여 반응 방향을 예측합니다.

소개

Reaction Quotient Calculator — Calculate reaction quotient Q and compare to Keq to predict reaction direction. Enter Product concentrations (comma-separated), Product coefficients, Reactant concentrations, Reactant coefficients, Keq (equilibrium constant) to get an instant, accurate result.

공식

Q = [products]^(coefficients) / [reactants]^(coefficients), calculated the same way as Keq but from concentrations at any point in the reaction, not necessarily equilibrium.

단계별 안내

  1. Enter the Product concentrations (comma-separated).
  2. Enter the Product coefficients.
  3. Enter the Reactant concentrations.
  4. Enter the Reactant coefficients.
  5. Enter the Keq (equilibrium constant).
  6. Click Calculate to see your result instantly.

실제 예시

Example: With Product concentrations (comma-separated) = 1, Product coefficients = 1, Reactant concentrations = 2, Reactant coefficients = 1, Keq (equilibrium constant) = 4, the Reaction Quotient Calculator gives Q: 0.5, Keq: 4, Direction: Forward (toward products).

자주 묻는 질문

How do I use Q to predict reaction direction?
If Q < Keq the reaction proceeds forward (toward products); if Q > Keq it proceeds in reverse (toward reactants); if Q = Keq the system is already at equilibrium.
What is the difference between Q and Keq?
Keq is calculated specifically from equilibrium concentrations, while Q uses whatever concentrations exist at a given moment — Q equals Keq only once equilibrium is reached.
What inputs does the Reaction Quotient Calculator need?
You'll need to provide: Product concentrations (comma-separated), Product coefficients, Reactant concentrations, Reactant coefficients, Keq (equilibrium constant). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Reaction Quotient Calculator?
The Reaction Quotient Calculator applies the formula exactly as calculated — Q = [products]^(coefficients) / [reactants]^(coefficients), calculated the same way as Keq but from concentrations at any point in the reaction, not necessarily equilibrium. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Reaction Quotient Calculator free to use?
Yes, the Reaction Quotient Calculator is completely free, requires no signup, and runs instantly in your browser.

반응지수 계산기 소개

The Reaction Quotient Calculator uses a real, verifiable formula — Q = [products]^(coefficients) / [reactants]^(coefficients), calculated the same way as Keq but from concentrations at any point in the reaction, not necessarily equilibrium. — so results are accurate every time, not an approximation.