A reaction of the form
aA → Products
gives a plot of [A] vs time (in seconds) which is a straight line with a slope of -6.90 × 10-2. Assuming [A]0 = 0.100 M, calculate the time (in seconds) required for the reaction to reach 80.7 percent completion.
AP Chem help?
2020-04-12 1:42 pm
回答 (1)
2020-04-12 2:46 pm
A plot of [A] vs. t would form a straight line if
[A] = -kt + [A]ₒ
where k = 6.90 × 10⁻²
When[A]ₒ = 0.100 M, [A] = (0.100 M) × (100 - 80.7)% = 0.0193 M:
0.0193 = -(6.90 × 10⁻²)t + 0.100
t = (0.100 - 0.0193) / 6.90 × 10⁻²) s
Time required, t = 1.17 s
[A] = -kt + [A]ₒ
where k = 6.90 × 10⁻²
When[A]ₒ = 0.100 M, [A] = (0.100 M) × (100 - 80.7)% = 0.0193 M:
0.0193 = -(6.90 × 10⁻²)t + 0.100
t = (0.100 - 0.0193) / 6.90 × 10⁻²) s
Time required, t = 1.17 s
收錄日期: 2021-04-18 18:32:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200412054250AAGSLeZ