Are these Chemical Equilibrium notes free?

Yes. The full 5-page Chemical Equilibrium sheet is free inside CapCompass, which runs in your browser with no account needed.

What does the Chemical Equilibrium revision sheet cover?

Reversible vs Irreversible Reactions, Equilibrium in Physical Processes, Chemical Equilibrium: the Dynamic State, Rate of Reaction and the Law of Mass Action, Deriving the Equilibrium Constant, Kc and Kp, Kc for the Haber equilibrium, N_2+3H_2rightleftharpoons2NH_3, Kp, the same expression in partial pressures, for aA(g)+bB(g)rightleftharpoons cC(g)+dD(g), linking the two through the ideal gas law, P_i=[i]RT for each gas, Worked: Kp from Kc for ammonia, Units of Kc, Homogeneous and Heterogeneous Equilibria.

Is this for Class 11 Maharashtra HSC Chemistry?

Yes, it is written for the Maharashtra HSC Chemistry syllabus.

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Chemical Equilibrium — Class 11 Maharashtra HSC Chemistry revision notes

A 5-page visual revision sheet for Chemical Equilibrium, written for Class 11 Maharashtra HSC Chemistry. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.

Chemical Equilibrium revision notes, page 1 of 5 — A preview of page 1 — all 5 pages open full size in the app.

Chemical Equilibrium in one look

forward and reverse running at the same rate, and the constant that says where they meet

Reversible vs Irreversible Reactions

irreversible reactions run ONE direction only, until a reactant is used up
e.g. C(s)+O_2(g)→ CO_2(g), shown with a single arrow
reversible reactions run BOTH directions at once: forward and reverse
shown with a double arrow, e.g. H_2(g)+I_2(g)rightleftharpoons2HI(g)
classic colour-change demo: Co(H_2O)_6^2++4Cl^-rightleftharpoons CoCl_4^2-+6H_2O
pink on cooling, blue on heating, same reaction, direction set by temperature
the SAME reaction can be reversible closed, irreversible open
e.g. heating CaCO_3: CO_2 escapes in an open vessel, stays and recombines in a closed one

Equilibrium in Physical Processes

liquid-vapour: in a CLOSED vessel, evaporation and condensation reach equal rates
giving a constant SATURATED VAPOUR PRESSURE, H_2O(l)rightleftharpoons H_2O(g)
solid-liquid: ice and water together at exactly 273 K, neither melts nor freezes net
solid-vapour (sublimation): solid iodine and its violet vapour reach a stable colour in a closed vessel
I_2(s)rightleftharpoons I_2(g); camphor and ammonium chloride behave the same way
solute-solid, in a SATURATED solution: dissolution rate equals crystallisation rate, Sugar(aq)rightleftharpoons Sugar(s)

Chemical Equilibrium: the Dynamic State

a reversible reaction in a closed system does NOT reach 100% yield
concentrations stop changing once the system reaches equilibrium
equilibrium is DYNAMIC, not static: forward and reverse reactions keep running
at exactly EQUAL rates, so there is no NET change
equilibrium can be approached from either side: starting from H_2+I_2 or from HI
reaches the SAME mixture at a given temperature
N_2O_4(g)rightleftharpoons2NO_2(g) is easy to WATCH: colourless N_2O_4 turns visibly brown
the colour stabilises exactly at equilibrium

Page 1 of 5. The full sheet, all 5 pages, opens free in the app.

What this Chemical Equilibrium sheet covers

Reversible vs Irreversible Reactions
Equilibrium in Physical Processes
Chemical Equilibrium: the Dynamic State
Rate of Reaction and the Law of Mass Action
Deriving the Equilibrium Constant
Kc and Kp
Kc for the Haber equilibrium, N_2+3H_2rightleftharpoons2NH_3
Kp, the same expression in partial pressures, for aA(g)+bB(g)rightleftharpoons cC(g)+dD(g)
linking the two through the ideal gas law, P_i=[i]RT for each gas
Worked: Kp from Kc for ammonia
Units of Kc
Homogeneous and Heterogeneous Equilibria
Worked: Kc for a heterogeneous equilibrium
Reaction Quotient Qc: Predicting Direction
Characteristics of Kc, and What Its Size Means
Worked: equilibrium concentrations from Kc
Equilibrium and Kinetics: kf vs kr
Le Chatelier's Principle
Four Disturbances, Summarised
Industrial Application: the Haber Process
Traps that cost marks
Tricks that save time

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