ABC Chemistry Blog · Blog

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Understand molar conductivity and use Kohlrausch law to find values for weak electrolytes, with a solved acetic acid example.

Inner sphere and outer sphere electron transfer mechanisms compared, with the ligand-transfer evidence, Marcus theory basics and the factors controlling rate.

Electrophilic addition to alkenes explained from the intermediate outwards: why Markovnikov orientation happens, when peroxides reverse it, and how bromonium

Ellingham diagram explained: why lines slope as they do, the carbon monoxide exception, choosing a reduction method, and the limits of the thermodynamic

Class 11 environmental chemistry: acid rain, photochemical smog, greenhouse effect, ozone depletion, BOD and COD, eutrophication and green chemistry.

Competitive, non-competitive and uncompetitive enzyme inhibition compared: effect on Km and Vmax, Lineweaver–Burk graphs and where the lines intersect.

Class 11 chemical equilibrium explained simply — writing Kc and Kp, the ICE table method, Le Chatelier questions and the mistakes that cost marks.

Error analysis in chemistry: systematic vs random error, accuracy vs precision, significant figure rules, error propagation and standard deviation.

ESR spectroscopy explained: resonance condition, g value, hyperfine splitting and the n+1 rule for equivalent nuclei, and applications to radicals and metal

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Are you aiming for top scores in IIT JAM, CSIR NET, GATE, TIFR, or BARC? ¹H Nuclear Magnetic Resonance (¹H NMR) Spectroscopy is a fundamental topic in

Free radical reactions explained: chain mechanism, radical stability order, chlorination vs bromination selectivity, the Hammond postulate and allylic

Primary cells, secondary cells and fuel cells for Class 12 Chemistry: the electrode reactions of the dry cell, lead storage battery, nickel-cadmium cell and

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GATE Chemistry (CY) organic chemistry weightage — which sub-topics have historically carried the most marks, and how to prioritise revision time.

Where Physical Chemistry marks concentrate in GATE Chemistry (CY), and how to allocate revision time across thermodynamics, quantum chemistry, kinetics and el

A realistic six-month GATE Chemistry (CY) study plan — month-by-month sequencing, when to start mock tests, and how to prepare alongside a job or final year.

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Gibbs free energy derived from the second law: why dG < 0 signals spontaneity, the enthalpy-entropy competition, temperature dependence and the link to

Gravimetric and volumetric analysis: requirements for a good precipitate, coprecipitation, primary standards, indicator error and sources of systematic error.

Green chemistry and atom economy explained with worked calculations: why a high percentage yield can still be wasteful, and how addition, substitution and

Why small-group Chemistry tuition works — motivation, structure and affordability — and which Class 11 and 12 students gain most.

The Hammett equation explained for CSIR-NET, GATE and IIT-JAM: reading sigma and rho, sigma vs sigma+, and what a non-linear Hammett plot reveals.

Five-membered heterocycles: pyrrole furan thiophene aromaticity, reactivity order, electrophilic substitution at C2, and basicity comparison with pyridine.

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Huckel MO theory explained: assumptions, secular determinant, energies for ethene butadiene and benzene, delocalisation energy and the 4n+2 rule derivation.

Hydrogen bonding for Class 11 and 12: the three conditions required, intermolecular versus intramolecular, and how it explains boiling points, the density of