The gas phase decomposition of dimethyl ether at 500 °C
CH3OCH3(g)CH4(g) + H2(g) + CO(g)
is first order in CH3OCH3 with a rate constant of 0.000400 s^-1
If the initial concentration of CH3OCH3 is 0.0193 M
M, the concentration of CH3OCH3 will be
M after s have passed.
What will be the concentration of CH3OCH3 will be M after ___s have passed?
2019-03-13 1:07 pm
回答 (1)
2019-03-13 3:54 pm
✔ 最佳答案
After t s have passed, there are (t/1730) half-lives.[CH₃OCH₃] = 0.0193 × (1/2)^(t/1730) M
For example, when 1000 s have passed,
[CH₃OCH₃] = 0.0193 × (1/2)^(1000/1730) M = 0.0129 M
One more example, when 2500 s have passed,
[CH₃OCH₃] = 0.0193 × (1/2)^(2500/1730) M = 0.00709 M
收錄日期: 2021-05-01 22:29:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20190313050751AApcftt