Chem help?
2020-08-07 10:06 pm
The decomposition of cyclopropane has a rate constant of 0.0247 s–1. What is the half-life if the initial concentration of cyclopropane is 2.00 M?
回答 (1)
2020-08-07 10:22 pm
The unit of rate constant for an nth-order reaction is M¹⁻ⁿ s⁻¹.
The unit of rate constant for the decomposition of cyclopropane is s⁻¹.
Hence, M¹⁻ⁿ = 0
1 - n = 1
n = 1
For a first order reaction, the half-life is independent of the initial concentration.
Half-life = ln(2)/k = ln(2)/0.0247 s = 28.1 s
The unit of rate constant for the decomposition of cyclopropane is s⁻¹.
Hence, M¹⁻ⁿ = 0
1 - n = 1
n = 1
For a first order reaction, the half-life is independent of the initial concentration.
Half-life = ln(2)/k = ln(2)/0.0247 s = 28.1 s
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