Thermochemistry
General Chemistry • 6 topics in this chapter.
This Thermochemistry chapter in General Chemistry focuses on energy changes in chemical and physical processes, with interactive calculators and explanations for heat, temperature change, specific heat capacity, calorimetry, and phase changes. It also supports key concepts like system vs surroundings, endothermic vs exothermic processes, and energy units and conversions (J, kJ, cal), helping you connect measurements to real chemical reasoning.
On this page you can calculate heat flow using q = m·c·ΔT, solve coffee-cup calorimetry problems, and work with enthalpy changes using Hess’s law and standard enthalpies of formation to find ΔH for reactions. Step-by-step outputs guide you through sign conventions, balanced-equation scaling, and unit tracking, making it easier to avoid common thermochemistry mistakes and interpret results correctly.
The difficulty range runs from beginner-friendly heat and calorimetry calculations to more advanced enthalpy and Hess’s law problem solving, making it ideal for high school, AP/IB Chemistry, and introductory college chemistry. Teachers can use it to demonstrate energy concepts clearly, self-learners can build confidence with structured practice, and advanced users can quickly verify thermochemical calculations for labs, worksheets, and exam preparation.
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1. Heat
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2. Heat of Reaction and Calorimetry
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3. Pressure Volume Work
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4. Enthalpy of Reaction
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5. Hess Law Enthalpy of Formation from Enthalpy of Combustion
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6. Hess Law Enthalpy of Reaction from Enthalpy of Formation
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