vera_ewing
  • vera_ewing
If the decomposition reaction of 1.4 M initial hydrogen peroxide (H2O2) occurs so that after 3 minutes, 0.83 M is left, what is the rate of the reaction? A. -0.0046 M/s B. -0.012 M/s C. -0.19 M/s D. -0.0032 M/s
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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vera_ewing
  • vera_ewing
@rvc @sweetburger What do you guys think?
rvc
  • rvc
please stay with us @Vocaloid :) vera you may know the formula for the following question
rvc
  • rvc
could you please write down the formula @vera_ewing

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More answers

TrojanPoem
  • TrojanPoem
−Δ[Reactants]/ Δt or Δ[Products]/Δt
rvc
  • rvc
\(\Large\rm Rate = Change~in~concentration~per~time\)
TrojanPoem
  • TrojanPoem
- (1.4 - 0.83) / 3 * 60 - initial ( 0 ) = approximately = - 0.003166 =- 0.0032 M/S Notice: In other example if there is coefficients with the reactants or products .. All these formulas are out.
TrojanPoem
  • TrojanPoem
@rvc, Change in concentration per time is average rate of reaction
vera_ewing
  • vera_ewing
So the answer is D?
TrojanPoem
  • TrojanPoem
I believe so.
rvc
  • rvc
yep sorry for the mistake thanks
vera_ewing
  • vera_ewing
Thank you! Who should I give the medal to?
TrojanPoem
  • TrojanPoem
No problem.
TrojanPoem
  • TrojanPoem
Give it to rvc
vera_ewing
  • vera_ewing
How about this one?
rvc
  • rvc
no give it to trojan
vera_ewing
  • vera_ewing
@sweetburger Help please! @rvc
rvc
  • rvc
do you know about the energy profile diagram?
vera_ewing
  • vera_ewing
Yes
rvc
  • rvc
the starting of the curve is about the energy of reactants the middle part is the transition state and the latter part is the energy of products
vera_ewing
  • vera_ewing
So the answer is B?
rvc
  • rvc
No
vera_ewing
  • vera_ewing
A?
rvc
  • rvc
what difference do you see?
rvc
  • rvc
i think its C since the values are different
vera_ewing
  • vera_ewing
Are you 100% sure it's C?
rvc
  • rvc
yes according to me its C
vera_ewing
  • vera_ewing
Okay thanks! :)
rvc
  • rvc
:)
vera_ewing
  • vera_ewing
How about this one?
rvc
  • rvc
The question is asking about the least amount of time Which is the smallest no from the four options?
vera_ewing
  • vera_ewing
C can't be correct??
rvc
  • rvc
Min is greater than sec so you r right what remains next?
vera_ewing
  • vera_ewing
I think the answer is A...do you agree?
rvc
  • rvc
Check out the unit
rvc
  • rvc
its in minutes
vera_ewing
  • vera_ewing
Ohh so it's not A or C right?
rvc
  • rvc
4.48 X 10^-5= 0.0000448 s^-1
vera_ewing
  • vera_ewing
So the answer is B?
rvc
  • rvc
yep

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