M myMU Marshal Univer x -welcome, Dalton-Blac x A ALEKS . Learn-Dalton l × \\ e

Question

M myMU Marshal Univer x -welcome, Dalton-Blac x A ALEKS . Learn-Dalton l × e chegg Study Guided SX Chemistry question ! Che × C Secure https:// w/w awhaleks.com/alekscgi/ slexe/10 ulgNslk 78P3 Hlijk6J-TZh4NC7v 26 JuOtYisa u7L4e3uhSLE.mxkrkSSDqYnOJ P23yuqFNWEMN yaBw-TE11 Mg-Plvkv7. Q Apps D CHM 211 Sign In Microsoft Word-Na TU Intern Application Fc Bird ID Skills: How to A ALEKS-Assessment A ALEKS-Learn-Dalt Other bookmark KNETICS AND EQUILIBRIUM Deducing a rate law from the change In concentration over time Dalton- A chemistry graduate student is studying the rate of this reaction: 2H1@-. H2 (g) + 12 (g) He fills a reaction vessel with HI and measures its concentration as the reaction proceeds time[HI (minutes) 0 0.0600 AM 0. 0.0385 M 20. 00246 M 30. 0.0158 M 40. 0.0101 M Use this data to answer the following questions. Write the rate lw for this reaction rate-k Calculate tha value of tha rata constant k Round your anawer to 2 significant digits. Alo be aure your answar has the correct unit symbol. Check O Type here to search 2-27 PM 2/1/2018 3

Explanation / Answer

it is first order reaction :

1)    rate = k [HI]      -------------------------> answer 1)

2)

initial concentration = Ao = 0.0600 M

after some time concentration = At

for first order reaction rate constant formula

k = 1/t * ln [Ao / At]

if we get k value constant we can treat it as first order reaction

now let us solve

at t =10 min

k = 1/ 10 * ln (0.0600 / 0.0385)

k = 0.044 min-1

at t = 20 min

k = 1/ 10 * ln (0.0600 / 0.0246)

k = 0.044 min-1

so we are getting same rate constant value at all times . so it is first order reaction

k = 0.044 min-1 ----------------------------------------> answer 2

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.