The equation for the complete combustion of ethene (C2H4) is
C2H4(g) + 3 O2(g) ==> 2CO2(g) + 2H2O(g)

If 2.70 mol C2H4 is reacted with 6.30 mole O2, identify the limiting reagent.
show all work.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. 2.70 mol C2H4 x (3 mol O2/1 mol C2H4) = 8.1 mol O2 required. Note how the conversion factor I used converts mol C2H4 to moles O2 by dividing out (canceling C2H4 units and leaving unit O2). Do you have 8.1 moles O2? No. Therefore, all of the C2H4 can't be used because O2 is the limiting reagent. That is, there is not enough oxygen to burn all of the C2H4. You can check this (or suppose we had chosen the oxygen to start).
    6.3 mol O2 x (1 mol C2H4/3 moles O2) = 2.1 mol C2H4 needed to react with all of the oxygen. Do you have that much C2H4? Yes, we have 2.70 mols C2H4, which is enough to react with all of the oxygen and have some un-reacted C2H4 (2.70-2.10 = 0.60 mol) remain.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. 2H2+o2>2h2o

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. heck it up

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Write a balanced equation for the combustion of gaseous ethylene (C2H4), an important natural plant hormone, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water

  2. Chemistry

    The equation below shows the incomplete combustion of ethene. C2H4(g) + 2O2(g) ==> 2CO(g) + 2H2O(g) If 2.70 mol C2H4 is reacted with 6.30 mol O2, a) identify the limiting reagent. b) calculate the moles of water produced. Show all

  3. chemistry- stoichiometry problems

    C2H4+3 O2->2 co2+2 H2O If you start wit 45 grams of C2H4 how many grams of carbon dioxide will be produced?

  4. Chemistry - Thermodynamics

    Which one of the following reactions would you expect to have highest ΔS°? Answer A. C2H2(g) + 5/2O2(g) → 2CO2(g) + H2O(g) B. C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) C. CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) D. C2H6(g) + 7/2O2(g)

  1. chemistry

    C2H4(g)+ 3O2(g) --> 2 CO2 (g) + 2H2O (l) The complete combustion of 11.22g of ethylene, C2H4 (g), via the given equation, produces 564,4 KJ of heat. Calculate the standard enthalpy of formation for C2H4(g), using the standard

  2. chemistry

    Consider the reaction, C2H4 (g) + H2 (g)- C2H6 (g) where -137kJ of heat is released. How many kilojoules are released when 55.3g of C2H4 reacts?

  3. Chemistry!

    Use the equation below and determine what volume of O2 at STP is needed to react with 1.5 moles of C2H4? Balanced equation: C2H4 + 3O2 --> 2CO2 + 2H20 So 1 mole of C2H4/3 mol O2 --> 1.5 mols/ 4.5 mols O2. So if its 1 mol equals 1

  4. General Chemistry

    What volume of oxygen gas at STP is needed to react with 5.06 mol of C2H4, according to the following equation C2H4 + 3O2 ----> 2CO2 + 2H2O

  1. chemistry

    1. Calculate the standard enthalpy change for the reaction: C2H4(g) + H2(g) → C2H6(g) given that the enthalpy of combustion for the reactants and products are: ΔHºc(C2H4)(g) = -1411 kJ mol^-1 ΔHºc(C2H6)(g) = -1560 kJ mol^-1

  2. chemistry.

    Which hydrocarbon pair below have identical mass percentage of C? A: C3H4 and C3H6 B: C2H4 and C3H4 C: C2H4 and C4H2 D: C2H4 and C3H6 E: None of the above My answer is E...Can any one help me?

  3. chemistry

    Given the balanced equation: C2H4 + 3O2 ¨ 2CO2 + 2H2O How many liters of CO2 are produced when 15 liters of O2 are consumed?

  4. Chemistry (Organic)

    What is the molecular formula for an alkane with 12 carbon atoms? (Type your answer using the format C2H4 for C2H4.) so this problem might be easy because its the first question on my webassign but my teacher hasn't started

View more similar questions or ask a new question.