Electrolytic against galvanic cells, Faraday's two laws and the 96,500 C, preferential discharge, the hydrogen and calomel electrodes, the electrochemical series, and the commercial cells.
Unit 1 carries 17 of the 50 chemistry marks; with fourteen chapters sharing them, this one averages a little over one (MEC publishes weights by unit, not by chapter). Electrochemistry is one of the two heaviest chapters in the unit, because it is numerical, because the electrochemical series is asked about again in Chemistry of metals and Redox reactions, and because the commercial cells are pure recall that a careful hour secures.
The MEC scope line runs: Electrolytic cells; qualitative and quantitative aspects of electrolysis; standard electrode potential, standard hydrogen electrode and calomel electrode; electrochemical series and its applications; galvanic cells and standard emf; commercial, primary and secondary cells, hydrogen–oxygen fuel cell; related numerical problems. The headings below are its points, in MEC's order.
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See the plansMole Concept & Stoichiometry Made Simple
Avogadro's number, molar mass, molarity and the calculations that show up every year.
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The vocabulary every other chemistry chapter assumes: valency, the carbon-12 mass scale, the radical charges you must know cold, and the two routines that turn a percentage into a formula.
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Dalton's postulates and where they fail, the five laws of combination, Avogadro's law and its uses, and every mole calculation the paper can ask, worked step by step.
Atomic Structure: From Bohr's Orbit to the Quantum Orbital
Rutherford's nucleus and why it could not survive, Bohr's three formulae, the hydrogen spectrum, de Broglie and Heisenberg, and the four quantum numbers that build every configuration.