Sunday, September 20, 2015

September 20, 2015

4 NH3(g)  + 5 O2(g)   --->   4 NO(g)  +  6 H2O(l)

I will write a question based upon rates of the above reaction. The first person will answer this question and then write a second question that the next person will answer and then write a question continuing on …..

So to start: What is the expression for the rate of disappearance of NH3?
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15 comments:

  1. UnknownSeptember 21, 2015 at 2:06 PM

    i believe the disappearance of NH3 would be expressed as -1/4 delta concentration nh3 over delta t...

    what is the rate of disappearance of 02

    ReplyDelete
    Replies
    1. UnknownSeptember 24, 2015 at 3:39 AM

      No coefficients used in rates of disappearance or appearance. Thus you are correct except for the 1/4 term.

      Delete
  2. UnknownSeptember 21, 2015 at 3:29 PM

    This comment has been removed by the author.

    ReplyDelete
  3. UnknownSeptember 21, 2015 at 3:30 PM

    I believe the expression for the rate of disappearance of O2 is...
    1/5(-delta [concentration O2]/delta T)

    What is the expression for the rate of appearance of H2O?

    ReplyDelete
    Replies
    1. UnknownSeptember 24, 2015 at 3:40 AM

      No coefficients used in rates of disappearance or appearance. Thus you are correct except for the 1/5 term.

      Delete
  4. UnknownSeptember 21, 2015 at 6:49 PM

    rate of appearance of H20
    1/6 (delta [concentration H20]) / (delta t)

    What is the rate of appearance of NO?

    ReplyDelete
    Replies
    1. UnknownSeptember 24, 2015 at 3:40 AM

      No coefficients used in rates of disappearance or appearance. Thus you are correct except for the 1/6 term.

      Delete
  5. UnknownSeptember 23, 2015 at 6:39 PM

    The rate of appearance of NO is..
    1/4 (Δ [NO]/Δ t)

    What are the rate relationships between all species in the given reaction?

    ReplyDelete
    Replies
    1. UnknownSeptember 24, 2015 at 3:40 AM

      No coefficients used in rates of disappearance or appearance. Thus you are correct except for the 1/4 term.

      Delete
    2. UnknownSeptember 24, 2015 at 3:41 AM

      Pick two species to relate for Brett's question.

      Delete
  6. UnknownSeptember 24, 2015 at 5:03 PM

    Rate(Disappearance) NH3= Rate(Appearance)NO

    What is the reaction order for this equation?

    ReplyDelete
    Replies
    1. UnknownSeptember 25, 2015 at 7:31 AM

      You can not determine the reaction order because there is no experimental data and it is not a single collision reaction.
      Next person, pick another two species and answer Brett's question.
      "What are the rate relationships between another two species in the given reaction? "

      Delete
    2. UnknownSeptember 25, 2015 at 3:07 PM

      Rate(Appearance)NO3 = Rate(Appearance) 3/2 H2O

      What is the limiting reactant in this reaction?

      Delete
    3. UnknownSeptember 28, 2015 at 12:31 PM

      I think you meant NH3 (not NO3). NH3 is slower than H20 thus NH3 is 2/3 of H2O.
      Can not answer "what is the limiting reactant" because we do not know the number of grams (moles) put into the reaction flask.
      The next person should answer this question: "What is the rate of reaction in terms of NO?"

      Delete
  7. UnknownOctober 22, 2015 at 3:56 AM

    Thanks for your responses!

    ReplyDelete

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