College chemistry

posted by .

Need help balancing chemical equation. Complete and balance the chemical equation. Be sure to include the states of the reactants and products.

C3H8(g)+O2(g) →

  • College chemistry -

    This is an example of a combustion reaction involving a hydrocarbon (in this case propane) reacting with oxygen. The products of such reactions are almost always water and carbon dioxide.

    C3H8(g) + O2(g) → H2O + CO2

    First balance the number of Carbons on both sides. There are 3 Carbon atoms for every propane molecule and 1 for each carbon dioxide.

    C(3)H8(g) + O2(g) → H2O + _X_CO2

    Second balance the number of Hydrogens. Here we have 8 for each propane and 2 for each water.

    C3H(8)(g) + O2(g) → _Y_H(2)O + X*CO2

    Finally count up all the oxygen atoms on the right side of the equation and balance that with the oxygen molecules on the left.

    C3H8(g) + _Z_O2(g) → Y*H2O + X*CO2
    where Z = X/2 + Y

    Sometimes after this you will end up with fractions, which is okay, but if you prefer you can multiply both sides of the equation by the lowest common denominator to get rid of the fractions. In this case you shouldn't have any fractions.

    Oh, and don't forget to include the states. CO2 is obviously a gas and H2O will likely also be a gas (water vapor) due to the heat yielded by the reaction.

    Hope this helps.

  • College chemistry -

    2[C3H8]+7O2 - 3[CO2](g)+8[H2O](l)

  • College chemistry -

    2[C3H8] +7O2 - 3[CO2](g) + 8[H2O](l)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    For each of the following chemical reactions: a.)classify the reaction as combination, decomposition,single replacement, or double replacement. b.)complete the word equation. c.)using the formulas for both reactants and products, balance …
  2. chemistry

    Complete and balance the chemical equation using compound formulas. Include the states. If there is no reaction, enter NR. Pb(NO3)2(aq) + NaI(aq) → sine Pb is not reactive, the reaction is NR. Am i correct?
  3. Chemistry

    I'm having a lot of trouble balancing this chemical equation: Fe(NO3)3(aq) + KSCN(aq) → KNO3(aq) + FeSCN2+(aq) Also, I'm not even sure if the equation is right... Help is appreciated, thanks
  4. chemistry(balance equation)

    hi!i am a f4 student in hk.i have know the basic concept of balance equation.but some too complex equation i cant balance.is there any general short cut for balancing any simple or complex chemical equation?
  5. Science

    I am learning how to balance a chemical equation but I don't understand it at all. I read that in order to balance the equation, you need to find the number of atoms. How do I do that?
  6. Chemistry

    Complete and balance the chemical equation. Be sure to include the states of the reactants and products. SO2(g)+O2(g) → thanks
  7. chemistry

    Reacting Mg with acid solution to form Mg salt and Hydrogen gas. What are the: 1.general reaction type 2. Chemical equation include phase 3. complete ionic equation include phase 4. chemical equation for the reaction between magnesium …
  8. chemistry 20

    A student mixed a solution of aqueous calcium chloride with an aqueous solution of magnesium sulphate. A precipitate formed. 1) Write the balance chemical equation for the reaction including states of matter. Ensure you write the reactants …
  9. Chemistry

    when heated, sulfuric acid will decompose into sulfur trioxide and water. Write a chemical equation, using words, to represent this chemical reaction. Identify reactants and products. (I'm having trouble identifying the reactants and …
  10. Chemistry

    Potassium is a reactive element. Bromine is a reactive element. Write the complete balanced chemical equation using appropriate chemical symbols for the reaction when potassium reacts with bromine to make a solid product showing correct …

More Similar Questions