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For the reaction X to Y +Z if the in...

For the reaction `X to Y +Z` if the initial concentration of X was reduced form 2M to 1M in 20 min and from 1M to 0.25M in 40min , find the order .

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Half-life, `(t_(1//2))alphaa^(1-n)`
Here, half-life is independent on the initial concentration.
The order of the reaction is `1`.
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