Elevate your students’ mastery of thermochemistry with this fully interactive, high-fidelity web simulation designed for A-Level Chemistry (covering AQA, OCR, Edexcel, and WJEC specifications).

This comprehensive two-stage simulation models the classic sequential Hess’s Law / enthalpy change of reaction practical.

Students determine the enthalpy changes for the reactions of potassium carbonate K2(CO)3 and potassium hydrogen carbonate KHCO3 with hydrochloric acid HCl, navigating everything from precise mass weighing by difference to temperature-time data logging and heat transfer calculations.

Key Features & Learning ObjectivesComplete Two-Stage Workflow: Guides students sequentially through both experimental parts:Stage 1: Reaction of solid K2(CO)3 with excess HCl (exothermic temperature rise). Stage 2: Reaction of solid KHCO3 with excess HCl (endothermic temperature drop).

Realistic Drag-and-Drop Laboratory Physics: Students physically manipulate equipment in a virtual labassembling polystyrene calorimeters inside glass beakers, measuring 30 cm3 of acid via graduated cylinders, weighing sample bottles on a responsive electronic balance, and positioning thermometers.

Active Safety & Error Interlocks: Built-in safeguards challenge students to place thermometers correctly in solution and keep them immersed during active temperature changes, preventing invalid data collection and prompting immediate peer feedback.

Dual-Column Live Data Tracking: Automatically logs experimental measurements mass 1, mass 2, mass added, T1, T2 Delta T, and calculated heat flow q) across side-by-side data tables for seamless comparison.