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jok3333 [9.3K]
2 years ago
11

Element X forms an oxide with chemical formula X20. Experimental tests show that X20 contains 25.8 % oxygen, and x contains 74.2

% by mass.
(b) Use this information to identify element X.
Chemistry
1 answer:
lawyer [7]2 years ago
6 0
Hdhdhdh hdhdhdh hdhdhdh
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2 H2O2(aq) ----> 2 H2O(l) + O2(g) in the presence of I-(aq) is proposed to be: Step 1 (slow): H2O2 + I- -----> H2O + OI- S
andrezito [222]

Answer:

Molecularity of the rate determining step = 2

Explanation:

Step 1 (slow): H₂O₂ + I⁻ -----> H₂O + OI⁻

Step 2 (fast): H₂O₂ + OI⁻ -----> H₂O + O₂ + I⁻

The rate determining step in a reaction mechanism is also considered as slowest step.

Slowest step is also considered its highest activation energy in energy profile diagram.

In this case intermediate  (IO⁻) is formed.

Step 1 considered as a slowest step.

So,  Rate = K [H₂O₂][I⁻]

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2 years ago
The turnover number is defined as the maximum number of substrate molecules that can be converted into product molecules per uni
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Answer:

Explanation:

turn over number = R max / [E]t   = K2

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T [E]t = 2.23 n mol. L^-1

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Putting values in above equation,

=          111.65 * 10^3           S^-1

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Answer:

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Explanation:

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