Chemical Equilibrium formulas

Every formula JEE Advanced expects you to know for Chemical Equilibrium, with the variables spelled out. Free, no sign-up. Read it before a mock, not during one.

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Formulas: 22
Subject: Chemistry
Exam: JEE Advanced
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Chemical Equilibrium, every formula

22 formulas, typeset and free. Print it, or keep it open beside your practice.

Equilibrium constant (concentration)
$K_{c} = \frac{[ C ] ^{c} [ D ] ^{d}}{[ A ] ^{a} [ B ] ^{b}}$
Equilibrium constant (pressure)
$K_{p} = \frac{p _{C}^{c} p _{D}^{d}}{p _{A}^{a} p _{B}^{b}}$
Kp–Kc relation
$K_{p} = K_{c} (R T)^{Δ n_{g}}$
Reaction quotient
$Q = \frac{[ C ] ^{c} [ D ] ^{d}}{[ A ] ^{a} [ B ] ^{b}}$
Direction of reaction
$Q < K forward, Q > K backward$
Kp in terms of degree of dissociation
$K_{p} = \frac{4 α ^{2}}{1 - α ^{2}} P$
A₂⇌2A
Degree of dissociation (small)
$α = \frac{K _{p}}{P}$
Free energy and K
$Δ G^{\circ} = - R T ln K$
van't Hoff equation
$ln \frac{K _{2}}{K _{1}} = - \frac{Δ H}{R} (\frac{1}{T _{2}} - \frac{1}{T _{1}})$
K for reverse reaction
$K_{r e v} = \frac{1}{K _{f w d}}$
K for a multiplied reaction
$K^{'} = K^{n}$
reaction multiplied by n
K for added reactions
$K = K_{1} \times K_{2}$
Le Chatelier (pressure)
$increase P \Rightarrow shift to fewer gas moles$
Le Chatelier (temperature)
$increase T \Rightarrow shift in endothermic direction$
Vapour density and dissociation
$α = \frac{D - d}{( n - 1 ) d}$
Kc units
$(mol/L)^{Δ n}$
Equilibrium: rates equal
$rate_{f or w a r d} = rate_{ba c k w a r d}$
Degree of dissociation range
$0 \leq α \leq 1$
Homogeneous equilibrium
$all species in the same phase$
Heterogeneous equilibrium
$pure solids/liquids excluded from K$
Mole fraction & Kx
$K_{p} = K_{x} P^{Δ n_{g}}$
Effect of catalyst
$K unchanged (equilibrium reached faster)$

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Chemical Equilibrium formulas

Chemical Equilibrium, every formula

Equilibrium constant (concentration)

Equilibrium constant (pressure)

Kp–Kc relation

Reaction quotient

Direction of reaction

Kp in terms of degree of dissociation

Degree of dissociation (small)

Free energy and K

van't Hoff equation

K for reverse reaction

K for a multiplied reaction

K for added reactions

Le Chatelier (pressure)

Le Chatelier (temperature)

Vapour density and dissociation

Kc units

Equilibrium: rates equal

Degree of dissociation range

Homogeneous equilibrium

Heterogeneous equilibrium

Mole fraction & Kx

Effect of catalyst

More JEE Advanced Chemistry formula sheets

Know the Chemical Equilibrium formulas. Now use them.

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