Enthalpy Changes
7 past-paper questions on Enthalpy Changes · examined 2022–2024.
20241 question
Hydrogen and chlorine react to form hydrogen chloride. What is the enthalpy change, ΔH, for this reaction?
20232 questions
Hydrogen and bromine react to form hydrogen bromide. What is the enthalpy change, ΔH, for this reaction?
Hydrogen can be produced by reacting methane with steam. CH4 + 2H2O → CO2 + 4H2 Using the bond energies in the table, what is the enthalpy change of reaction, ∆H?
20224 questions
Plot the results on the grid. Circle the anomalous point on the grid. Draw a straight line of best fit.
Use the extended line to deduce the expected temperature rise if an alcohol with seven carbon atoms is used in the experiment.
Explain why this means it is not possible for the student to obtain the temperature rise in (b)(i).
Suggest one change that can be made to the experiment that would make it possible to obtain the temperature rise in (b)(i).
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