Chemistry WCH14/01 October 2021
Edexcel
International AS/A Level
Chemistry (WCH)
Oct
2021
2. acid–base equilibria—Ka and pKa use, buffer pH and capacity, indicator selection, titration curve interpretation, assumptions in pH calculations
3. thermodynamics and energetics—Born–Haber cycle construction, lattice energy calculation, entropy (∆Ssystem, ∆Ssurroundings) signs, feasibility using ΔG
4. organic analysis—empirical formula determination from combustion, functional group tests (Tollens’, 2,4-DNPH), isomer identification, ¹H and ¹³C NMR spectral analysis
5. equilibrium and Kp—expression and calculation from mole data, pressure and temperature effect on yield, conditions in ethanol production
6. spectroscopy and structural analysis—NMR signal interpretation (chemical shift, splitting, integration), IR and TLC usage, peak assignment for structural confirmation
معلم موافق رایگان بودن است.
1. reaction kinetics—zero and first order reactions, rate equation and unit of k, Arrhenius plot gradient, SN1/SN2 hydrolysis mechanisms comparison2. acid–base equilibria—Ka and pKa use, buffer pH and capacity, indicator selection, titration curve interpretation, assumptions in pH calculations
3. thermodynamics and energetics—Born–Haber cycle construction, lattice energy calculation, entropy (∆Ssystem, ∆Ssurroundings) signs, feasibility using ΔG
4. organic analysis—empirical formula determination from combustion, functional group tests (Tollens’, 2,4-DNPH), isomer identification, ¹H and ¹³C NMR spectral analysis
5. equilibrium and Kp—expression and calculation from mole data, pressure and temperature effect on yield, conditions in ethanol production
6. spectroscopy and structural analysis—NMR signal interpretation (chemical shift, splitting, integration), IR and TLC usage, peak assignment for structural confirmation
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