# Problem: At 400 K oxalic acid decomposes according to the reaction: H2C2O4(g) → CO2(g) + HCOOH(g). In three separate experiments, the initial pressure of oxalic acid and final total pressure after 20,000 s is measured.Experiment123P H2C2O4 at t = 065.8  92.1  111PTotal at t = 20,000 s93.6131158  Find the rate law of the reaction.

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###### FREE Expert Solution

We are asked to write the rate law expression for the given reaction

To do so, we shall follow these steps:

Step 1: Find the remaining pressure of oxalic acid.

Step 2: Use the integrated rate law equation for the first-order and check for the consistent value of K. ###### Problem Details

At 400 K oxalic acid decomposes according to the reaction: H2C2O4(g) → CO2(g) + HCOOH(g). In three separate experiments, the initial pressure of oxalic acid and final total pressure after 20,000 s is measured.

 Experiment 1 2 3 P H2C2O4 at t = 0 65.8 92.1 111 PTotal at t = 20,000 s 93.6 131 158

Find the rate law of the reaction.