1. Nitrogen monoxide and oxygen react to produce nitrogen dioxide according to the following equation:
O2(g) + 2NO(g) → 2NO2(g)
Use the data in the following table to type a rate law for this reaction.
Table:
http://i.imgur.com/M4KU2j8.png
2. Hydrogen reacts with ethyne, C2H2, to produce ethane, C2H6, as shown below:
2H2(g) + C2H2(g) → C2H6(g)
Use the data in the following table to type a rate law for this reaction.
Table:
http://i.imgur.com/qX3gcWA.png
Would appreciate any help.. thank you
chemistry rate law problem?
2016-06-21 12:14 pm
回答 (3)
2016-06-21 2:47 pm
✔ 最佳答案
1.O₂(g) + 2NO(g) → 2NO₂(aq)
Let Rate = k [O₂]ᵃ [NO]ᵇ
Substitute the data into the rate equation :
3.30 × 10⁻³ = k (1.20 × 10⁻²)ᵃ (1.40 × 10⁻²)ᵇ ...... [1]
6.60 × 10⁻³ = k (2.40 × 10⁻²)ᵃ (1.40 × 10⁻²)ᵇ ...... [2]
1.32 × 10⁻² = k (1.20 × 10⁻²)ᵃ (2.80 × 10⁻²)ᵇ ...... [3]
[2]/[1] :
2 = 2ᵃ
a = 1
[3]/[1] :
4 = 2ᵇ
b = 2
Hence, Rate = k [O₂] [NO]²
====
2.
2H₂(g) + C₂H₂(g) → C₂H₆(g)
Let Rate = k [H₂]ᵃ [C₂H₂]ᵇ
Substitute the data into the rate equation :
1.5 × 10⁻⁴ = k (0.20)ᵃ (0.20)ᵇ ...... [1]
3.0 × 10⁻⁴ = k (0.40)ᵃ (0.20)ᵇ ...... [2]
1.5 × 10⁻⁴ = k (0.20)ᵃ (0.40)ᵇ ...... [3]
[2]/[1] :
2 = 2ᵃ
a = 1
[3]/[1] :
1 = 2ᵇ
b = 0
Hence, Rate = k [H₂]
2016-06-21 12:30 pm
1 rate =k [O2][NO[^2
2 rate =k [H2] [C2H2]^0
2 rate =k [H2] [C2H2]^0
2016-06-21 12:16 pm
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收錄日期: 2021-04-18 15:08:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160621041440AAKZQN5