Question 1
Which statement is true for the reaction N₂(g) + 2O₂(g) → 2NO₂(g)?
Worked answer
🔒 Start free to see full answer
Chemistry · Unit 1 · Chemical reactions — reactants, products and energy change · Chemical reactions
Analyse enthalpy level diagrams and thermochemical equations to determine the relative stabilities of reactants and products, and the sign of the enthalpy change (ΔH) for a reaction.
Practise this objective
AI-marked practice questions tied to QCAA mark schemes for this exact LO. Free to start.
Start free practicePractice questions for this objective
Full questions, answers and worked solutions unlock when you start a free practice session.
Question 2
Deduce whether the reactants or products are more stable for the reaction shown in the enthalpy level diagram. Explain your reasoning.
Worked answer
🔒 Start free to see full answer
More in Chemical reactions
← Previous
Analyse data to determine percentage and theoretical yield. (Formula: percentage yield (%) = experimental yield theoretical yield × 100 1)
Next →
Apply the mole concept to calculate the mass of reactants and products; amount of substance in moles; number of representative particles; and molar mass of atoms, ions, molecules and formula units. (Formula: moles (𝑛) = mass (m) molar mass (M))