The activation energy, Eₐ, of the reaction between aqueous manganate(VII) ions, MnO₄⁻(aq), and aqueous ethanedioate ions, C₂O₄²⁻(aq), can be determined as follows. step 1 Use a pipette to transfer 10.00 cm³ of 0.0200 mol dm⁻³ MnO₄⁻(aq) into a boiling tube. step 2 Use a second pipette to transfer 10.00 cm³ of 0.0500 moldm⁻³ C₂O₄²⁻(aq) into a second boiling tube. step 3 Place both boiling tubes into a water-bath at approximately 50 °C and allow the temperature of both solutions to become equal and constant. step 4 Record this constant temperature. step 5 Pour the C₂O₄²⁻(aq) solution into the boiling tube containing the MnO₄⁻(aq) solution and immediately start the timer. Continue to stir the mixture during the reaction. step 6 When the reaction finishes, stop the timer and record the time. step 7 Repeat the experiment at different temperatures and record the results. The student used their recorded data to complete columns 1–3 of the table. experiment number | average temperature of reaction mixture (T) /K | time (t)/s | 1/T /K⁻¹ | log t ---|---|---|---|--- 1 | 333 | 11 | | 2 | 323 | 35 | | 3 | 315 | 76 | | 4 | 310 | 145 | | 5 | 304 | 284 | |