K Value Calculator

Enter the mole fraction in the vapor and the mole fraction in the liquid into the calculator to determine the K Value.

K Value Formula

The following formula is used to calculate a k value.

K = y / x

  • Where K is the K value, or vapor-liquid equilibrium ratio.
  • y is the mole fraction in the vapor
  • x is the mole fraction in the liquid

K Value Definition

The K Value is most often called the vapor-liquid equilibrium constant. It’s a ratio of the mole fraction in a vapor to the mole fraction in a liquid of a vapor to liquid transition or state. This value is derived from Henry’s Law and is sometimes called Henry’s constant.

Can K values be negative?

In chemistry, as the formula above is used for, k values cannot be negative since you cannot have a negative mole fraction of a substance.

K Value Example

how to calculate k value?

  1. First, determine the mole fraction in the vapor.

    Determine the mole fraction of the molecule in a vapor state.

  2. Next, determine the mole fraction in the liquid.

    Calculate the mole fraction of the molecule in a liquid state.

  3. Finally, calculate the K Value.

    Calculate the K value using the formula above.

FAQ

What is a mole fraction?

A mole fraction is the ratio of the number of moles of one component of a solution to the total moles of all components.

k value calculator
k value formula