Corrections Problem solving no. 1 (Calorimetry Problem) Redox reaction changed from "MnO4 + S203-2 - MnO2(g) + S0,2 " to

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Corrections Problem Solving No 1 Calorimetry Problem Redox Reaction Changed From Mno4 S203 2 Mno2 G S0 2 To 1 (44.97 KiB) Viewed 53 times

Corrections Problem solving no. 1 (Calorimetry Problem) Redox reaction changed from "MnO4 + S203-2 - MnO2(g) + S0,2 " to "MnO4 + S032 - MnO2(g) + S02 The recorded temperature change for enthalpy determination is 3.400 °C Callie was tasked to determine the enthalpy for the reduction of permanganate to manganic oxide using sulfite following the equation below: MnO4 + 50,2 --> MnO2(0) + 50. Callie needed to calibrate the calorimeter first so he reacted 5.00 mL of 1.00 M HCl with 10.00 mL of 1.00 M NaOH in a makeshift styrofoam calorimeter. The recorded temperature change for the reaction was 2.800 °C. To determine the enthalpy of the reaction, he then reacted 5.00 mL of 0.100 M KMnO solution with 10.00 mL 0.500 M Na2SO3 in the calibrated calorimeter. A temperature change of 3.400 °C was recorded. Constants: AH = -55.85 kJ/mol H* (q + OH (9) -- H20 s(MnO2) = 54.1 J/mol K a b. . c. d. Write the overall balanced chemical equation for the redox reaction in acidic medium. Calculate the heat capacity of the calorimeter (cal). Calculate the corrected Ccal What is the enthalpy of the redox reaction? Express your answer in kJ/mol. d.