Equilibrium Constant

📊 intermediate

$$K_c = \frac{[\text{C}]^c[\text{D}]^d}{[\text{A}]^a[\text{B}]^b}$$

Ratio of product to reactant concentrations at equilibrium for reaction $aA + bB \rightleftharpoons cC + dD$.

Variables & Units

$K_c$

Equilibrium constant (concentration)

Unit: $\text{unitless}$

$[\text{A}], [\text{B}], [\text{C}], [\text{D}]$

Equilibrium concentrations

Unit: $\text{mol/L}$

$a, b, c, d$

Stoichiometric coefficients

Unit: $\text{unitless}$

Key Information

📐 Derived From

Law of mass action (Guldberg and Waage)

💡 Example

For $N_2 + 3H_2 \rightleftharpoons 2NH_3$, $K_c = [NH_3]^2/([N_2][H_2]^3)$.

🔧 Applications

Chemical synthesis, environmental chemistry, pharmaceuticals

⚠️ Constraints

Constant temperature, ideal behavior

Ready to start your journey?

Talk to an expert counsellor – absolutely free. We'll help you choose the right program.

Get In Touch

Have questions about programs? Need guidance on which course fits you? Our team responds fast.

Our counsellors help you pick the right program for your exam goal and timeline — completely free of charge.

Our Office

GRAWIO BANJARI INDUSTRIES PRIVATE LIMITED HD 463 WEWORK DLF FORUM, CYBERCITY PHASE III, DLF QE, Dlf Qe

Email Us

Call / WhatsApp

Monday – Saturday 10 AM – 6 PM Open

Sunday Closed

📍 Walk in for free counselling — no appointment needed

Your Name

Email Address

Phone Number

Your Message