Anila performed the following reactions between oxalic acid (H2C2O4) and Permanganate ion and measured the reaction time at a constant temperature:
MnO4-(aq) + H2C2O4(aq) --> MnO2(aq) + CO2(g) + (other products)
rate = k[MnO4-]x [H2C2O4]y
Determination | Initial [MnO4-], mol/L | Initial [H2C2O4], mol/L | Elapsed time (Δt), s | Reaction rate, mol/L·s |
1 | 0.0230 | 0.120 | 224 | |
2 | 0.0230 | 0.240 | 111 | |
3 | 0.0460 | 0.240 | 110 |
a) (3 pts) Calculate the reaction rate of the determination 2, using reaction rate = -Δ[MnO4-]/Δt.
b) (3 pts) Determine the order (y) of the reaction with respect to H2C2O4 .
c) (4 pts) Calculate the rate constant, k, in this reaction.
d) (Bonus, +5 pts) Calculate the reaction rate for the reaction of MnO4- and H2C2O4 at the same temperature when the initial MnO4- and H2C2O4 concentrations are 2.34 x 10-3 mol/L and 5.42 x 10-1 mol/L, respectively.
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