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Equilibrium Constant Formula

GoEquilibrium Constant with respect to Molar Concentrations Formula

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Equilibrium Constant is the value of its reaction quotient at chemical equilibrium. Check FAQs

K c = \frac{K f}{K b}

K_c - Equilibrium Constant?K_f - Forward reaction rate constant?K_b - Backward Reaction Rate Constant?

Equilibrium Constant Example

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With units

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Here is how the Equilibrium Constant equation looks like with Values.

Here is how the Equilibrium Constant equation looks like with Units.

Here is how the Equilibrium Constant equation looks like.

60.0601 = \frac{200}{3.33}

60.0601mol/L = \frac{200mol/L}{3.33mol/L}

60.0601 = \frac{200}{3.33}

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Equilibrium Constant Solution

Follow our step by step solution on how to calculate Equilibrium Constant?

FIRST Step Consider the formula

K c = \frac{K f}{K b}

Next Step Substitute values of Variables

∴

K c = \frac{200mol/L}{3.33mol/L}

Next Step Prepare to Evaluate

∴

K c = \frac{200}{3.33}

Next Step Evaluate

∴

K c = 60060.0600600601mol/m³

Next Step Convert to Output's Unit

∴

K c = 60.0600600600601mol/L

LAST Step Rounding Answer

∴

K c = 60.0601mol/L

Equilibrium Constant Formula Elements

Variables

Equilibrium Constant

Equilibrium Constant is the value of its reaction quotient at chemical equilibrium.

Symbol: K_c

Measurement: Molar ConcentrationUnit: mol/L

Note: Value can be positive or negative.

Formulas to find Equilibrium Constant

Forward reaction rate constant

Forward reaction rate constant is the rate of forward reaction.

Symbol: K_f

Measurement: Molar ConcentrationUnit: mol/L

Note: Value can be positive or negative.

Formulas to find Forward reaction rate constant

Backward Reaction Rate Constant

Backward Reaction Rate Constant is the rate of backward reaction.

Symbol: K_b

Measurement: Molar ConcentrationUnit: mol/L

Note: Value can be positive or negative.

Formulas to find Backward Reaction Rate Constant

Other Formulas to find Equilibrium Constant

Go Equilibrium Constant with respect to Molar Concentrations

K c = \frac{({Eq conc C}^{c}) \cdot ({Eq conc D}^{d})}{({Eq conc A}^{a}) \cdot ({Eq conc B}^{b})}

Other formulas in Equilibrium Constant category

Go Forward Reaction Rate Constant

K f = K c \cdot K b

Go Backward Reaction Rate Constant

K b = \frac{K f}{K c}

Go Equilibrium Concentration of Substance A

Eq conc A = {(\frac{({Eq conc C}^{c}) \cdot ({Eq conc D}^{d})}{K c \cdot ({Eq conc B}^{b})})}^{\frac{1}{a}}

Go Equilibrium concentration of Substance B

Eq conc B = \frac{Eq conc C \cdot Eq conc D}{K c \cdot Eq conc A}

How to Evaluate Equilibrium Constant?

Equilibrium Constant evaluator uses Equilibrium Constant = Forward reaction rate constant/Backward Reaction Rate Constant to evaluate the Equilibrium Constant, The Equilibrium constant formula is defined as the ratio of the product concentrations to reactant concentrations. Equilibrium Constant is denoted by K_c symbol.

How to evaluate Equilibrium Constant using this online evaluator? To use this online evaluator for Equilibrium Constant, enter Forward reaction rate constant (K_f) & Backward Reaction Rate Constant (K_b) and hit the calculate button.

FAQs on Equilibrium Constant

What is the formula to find Equilibrium Constant?

The formula of Equilibrium Constant is expressed as Equilibrium Constant = Forward reaction rate constant/Backward Reaction Rate Constant. Here is an example- 2.9E-6 = 200000/3330.

How to calculate Equilibrium Constant?

With Forward reaction rate constant (K_f) & Backward Reaction Rate Constant (K_b) we can find Equilibrium Constant using the formula - Equilibrium Constant = Forward reaction rate constant/Backward Reaction Rate Constant.

What are the other ways to Calculate Equilibrium Constant?

Here are the different ways to Calculate Equilibrium Constant-

Equilibrium Constant=((Equilibrium Concentration of C^No. of Moles of C)*(Equilibrium Concentration of D^No. of Moles of D))/((Equilibrium Concentration of A^Number of Moles of A)*(Equilibrium Concentration of B^No. of Moles of B))

Can the Equilibrium Constant be negative?

Yes, the Equilibrium Constant, measured in Molar Concentration can be negative.

Which unit is used to measure Equilibrium Constant?

Equilibrium Constant is usually measured using the Mole per Liter[mol/L] for Molar Concentration. Mole per Cubic Meter[mol/L], Mole per Cubic Millimeter[mol/L], Kilomole per Cubic Meter[mol/L] are the few other units in which Equilibrium Constant can be measured.

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Equilibrium Constant Formula

​GoEquilibrium Constant with respect to Molar Concentrations Formula

Equilibrium Constant Example

Equilibrium Constant Solution

Equilibrium Constant Formula Elements

Other Formulas to find Equilibrium Constant

Other formulas in Equilibrium Constant category

How to Evaluate Equilibrium Constant?

FAQs on Equilibrium Constant

Variable Name

GoEquilibrium Constant with respect to Molar Concentrations Formula