The Hydrogen and Its Compounds – Numerical Applications section focuses on quantitative problem-solving involving hydrogen and its compounds, integrating stoichiometry, gas laws, redox concepts, and solution chemistry. This module is designed for Class 11–12 students, undergraduate learners, and competitive exam aspirants, where accuracy, unit discipline, and logical calculation steps are critical.

In this section, you will practice numericals based on:

• Preparation of hydrogen – mole, mass, and volume relationships

• Gas laws applied to hydrogen – STP/NCERT conditions, density calculations, and partial pressure

• Stoichiometric calculations involving hydrides, water, and hydrogen peroxide

• Redox-based numericals using oxidation numbers and equivalent weights

• Concentration calculations for H₂O₂ solutions (volume strength, % purity, molarity)

• Hardness of water – ppm calculations and softening efficiency

• Electrolysis of water – quantitative relation between charge, gas volume, and time

• Thermodynamic numericals involving enthalpy changes and reaction feasibility (introductory level)

• Multi-step mixed numericals integrating two or more concepts

• Exam-pattern numericals aligned with NEET, JEE, CUET-UG, and UG practical exams

The content is structured to build speed, numerical confidence, and conceptual accuracy, helping students minimize calculation errors in time-bound examinations.

Develop strong quantitative problem-solving skills in Hydrogen and Its Compounds to excel in numerical-heavy sections of Inorganic Chemistry.