The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E = 12.0 kJ/mol. If the rate constant of this -1 -1 reaction is 2.8 x 106 M 'S Round your answer to 2 significant digits. -1 -1 k = - M •S at 132.0 °C, what will the rate constant be at 47.0 °C? X S

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Chapter1: Chemical Foundations
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Using first- and second-order integrated rate laws
Consider this reaction:
2NH₂ (g) → N₂ (g) + 3H₂(g)
2
At a certain temperature it obeys this rate law.
rate = (3.71 s¯¹)[NH3]
Suppose a vessel contains NH3 at a concentration of 1.38M. Calculate how long it takes for the concentration of NH3 to decrease by 90.0%. You may assume
no other reaction is important.
Round your answer to 2 significant digits.
S
x10
×
0/5
S
Izabe
Transcribed Image Text:Using first- and second-order integrated rate laws Consider this reaction: 2NH₂ (g) → N₂ (g) + 3H₂(g) 2 At a certain temperature it obeys this rate law. rate = (3.71 s¯¹)[NH3] Suppose a vessel contains NH3 at a concentration of 1.38M. Calculate how long it takes for the concentration of NH3 to decrease by 90.0%. You may assume no other reaction is important. Round your answer to 2 significant digits. S x10 × 0/5 S Izabe
Using the Arrhenius equation to calculate k at one temperature from k at...
The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E = 12.0 kJ/mol. If the rate constant of this
a
reaction is 2.8 × 106 M
Round your answer to 2 significant digits.
1
k = M²¯ ¹
- 1 - 1
*S
−1
• S
at 132.0 °C, what will the rate constant be at 47.0 °C?
x10
X
Ś
Transcribed Image Text:Using the Arrhenius equation to calculate k at one temperature from k at... The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E = 12.0 kJ/mol. If the rate constant of this a reaction is 2.8 × 106 M Round your answer to 2 significant digits. 1 k = M²¯ ¹ - 1 - 1 *S −1 • S at 132.0 °C, what will the rate constant be at 47.0 °C? x10 X Ś
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