Chemistry

posted by .

1. When 20cm^3 of a gaseous Allene burns in an excess of oxygen, 60cm^3 of carbon dioxide are formed. Both volumes are measures at r.t.p.
What is the formula of alkene?
Is it C3H6 or C6H12 and why?

2. A student investigate the reaction of vegetable oil with hydrogen.
100cm^3 of hydrogen was bubbled through 1g samples of four different vegetable oils containing a suitable catalyst. The volume of hydrogen remaining after each experiment was recorded.


P(vegetable oil).  100cm^3(vol of hydrogen remain)
Q(vegetable oil).   87cm^3(vol of hydrogen remain)
R(vegetable oil).   63cm^3(vol of hydrogen remain)
S(vegetable oil).    0cm^3(vol of hydrogen)

Which vegetable oils are unsaturated? And why is it so?
A. P,Q,R
B.Q and R
C. Q,R,S
D.S only

Thanks so much! :)

  • Chemistry -

    A.
    2C3H6 + 7O2 => 6CO2 + 6H2O
    C6H12 9O2 ==> 6CO2 + 6H2O
    Start with 20 cc C3H6 and determine the volume of CO2 formed. Do the same with C6H12. Which gives 60 cc CO2. That's the one

    B. This one seems too simple. Which one (note I asked ONE) uses no hydrogen? Is that P. And all of the others use hydrogen? Then those must have added some hydrogen so they must be unsaturated?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry.

    Methane, CH4 burns in oxygen gas to form carbon dioxide and water. How many moles of carbon dioxide will be formed from 8.0g of methane?
  2. chemistry

    Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 3.45 g of hexane is mixed with 16.3 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the …
  3. Chemistry

    Write a balanced equation for the incomplete combustion of gaseous pentane (C5H12) which combines gaseous oxygen to form carbon dioxide, gaseous water and carbon monoxide.
  4. chemistry

    Suppose 1.2x10^3 kg of C is mixed with 2.4x10^5g oxygen gas and carbon dioxide forms. 1. write the reaction and balance 2.which reactant is the limiting reagent and which reactant is in excess 3. How many grams of carbon dioxide will …
  5. chemistry

    Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . Suppose 0.481 g of methane is mixed with 2.9 g of oxygen. Calculate the maximum mass of carbon dioxide that could be …
  6. chemistry

    Using Table 9.4, calculate an approximate enthalpy (in kJ) for the reaction of 1.02 g gaseous methanol (CH3OH) in excess molecular oxygen to form gaseous carbon dioxide and gaseous water.
  7. Chemistry

    Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2o) . What is the theoretical yield of carbon dioxide formed from the reaction of 0.16g of methane and 0.83g of oxygen …
  8. Chemistry

    Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 16.2 g of ethane is mixed with 19. g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the …
  9. chemistry

    What is the unbalanced equation for the combustion reaction of gaseous C4H10 and gaseous oxygen to form gaseous carbon dioxide and gaseous water?
  10. chem

    The problem is :2.8 grams of ethene burns in oxygen to form carbon dioxide and water Calculate a)the number of moles in 2.8g of ethene b)the number of carbon dioxide(mole ratio) dioxide formed c)the mass of carbon dioxide formed D)the …

More Similar Questions