High School (11–12) Chemistry

The calculations that JEE, AP Chemistry and A-Level Chemistry set most: degree of dissociation from vapour density, simultaneous equilibria, pH of mixtures and very dilute solutions, polyprotic acids, and precipitation with Ksp, with a full timed paper.

The calculations that JEE, AP Chemistry and A-Level Chemistry ask most: work in reversible and irreversible expansions, Born-Haber and Hess cycles, bond enthalpies, and ΔG from ΔH and ΔS, with a full timed paper.

The hard questions of the chapter: dipole moments and molecular shape, tricky Lewis structures and formal charges, back bonding and bridges, and comparing bond lengths and energies, with a full paper.

Harder mole problems at the level of JEE, NEET, AP Chemistry and A-Level Chemistry: mixtures and average molar mass, reactions in sequence, yield and purity, and titrations, each worked step by step, with a full timed paper.

Why can an electron in an atom never be at rest? Why does oxygen lose an electron more easily than nitrogen, although its nucleus pulls harder? In this course we read two ideas that the main chapter only touches: the electron in a box, and the shielding of the nucleus by the inner electrons. Then we solve harder problems at the level of JEE Advanced, AP Chemistry and A-Level Chemistry, and take an advanced timed test.