Hell me with this ASAP please
1 answer:
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Answer:
x = 0.324 M s⁻¹
Explanation:
Equation for the reaction can be represented as:
2 NO(g) + Cl₂ (g) ⇄ 2NOCl (g)
Rate = K [NO]² [Cl₂]
Concentration =
from the question; their number of moles are constant since the species are quite alike.
As such; if Concentration varies inversely proportional to the volume;
we have: Concentration ∝
Concentration =
Similarly; the Rate can now be expressed as:
Rate = K [NO]² [Cl₂]
Rate =
Rate =
We were also told that the in the reaction, the gaseous system has an initial volume of 3.00 L and rate of formation of 0.0120 Ms⁻¹
So we can have:
0.0120 =
0.0120 = -----Equation (1)
Now; the new rate of formation when the volume of the system decreased to 1.00 L can now be calculated as:
x =
x = 1 ------- Equation (2)
Dividing equation (2) with equation (1); we have:
=
=
x = 0.0120 × 27
x = 0.324 M s⁻¹
∴ the new rate of formation of NOCl = 0.324 M s⁻¹
Answer:
k' = (2.0345 × 10⁻⁸) M/s.
Explanation:
Beer-Lambert's law explains that Absorbance is directly proportional to the concentration of the substrate under consideration.
A ∝c
A = εlc
where ε = molar absorptivity constant = 87,000 M⁻¹cm⁻¹
l = path length of the solution that the light passes through in cm = 1 cm for most cases.
c = concentration of the substrate.
In terms of rate terms,
A' = εlc'
where A' has units of Absorbance/s
c' = rate of reaction, units of concentration/s
A' = εlc'
From the graph, the slope of the graph = 0.00177 Absorbance/s
0.00177 = 87000 × 1 × c'
c' = (0.00177/87000)
c' = (2.0345 × 10⁻⁸) M/s.
This value is the pseudo rate constant, k'.
Hope this Helps!!!
