Question

The decomposition of HI (g) into its elements in the gas phase at 800 K is...

The decomposition of HI (g) into its elements in the gas phase at 800 K is found to proceed by a second order process.

A) Please write a balanced equation for the reaction (smallest integer ratio of coefficients, please).

B) Please write the rate law for the reaction:

C) Given that it takes 142 s for the [HI (g)] to change from 6.75 x 10-2 M to 3.50 x 10-2 M, please calculate the value of the rate constant (and its units) at 800 K.

Homework Answers

Answer #1

Decomposition of HI into its elements is:

<---this is into its elements in the gas phase (notice is not H2 neither I2)

Rate law is,

You need to solve it in order to calculate the k

It change from 6.75x10-2M to 3.5x10-2M

You can rearrange the eqution to calculate the k

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