# Science/Chemistry

posted by .

Write a Balanced equation for the chemcial reaction Acetylene gas (C2H2) burns in a welding torch with oxygen to form carbon dioxide gas and water vapor.

C2H2(g) + O2(g) ==> CO2(g) + H2O(g)
It isn't balanced. I will leave that for you.

How do i balance it?

trial and error.
C2H2 + O2 ==> CO2 + H2O.
I see 2 C on the left and only 1 on the right so I place a coefficient of 2 for CO2 on the right. And we go from there. Sometimes the 2 is right and sometimes it must be changed. So we are up to
C2H2 + O2 ==> 2CO2 + H2O
Now you finish.

Okay,is this right?
2 C2H2 + 5 O2 --> 4 CO2 + 2 H2O

Very good.

• Science/Chemistry -

Yes. There are 4 carbons and hydrogens on each side of the equation and there are 10 oxygens on each side too. Good Job!

## Similar Questions

1. ### Chemistry

The combustion reaction of acetylene gas is represented by this equation: 2 C2H2(g) + 5 O2(g) ==> 4 CO2(g) + 2 H2O(g) How many grams of CO2 and grams of H2O are produced when 52.0g C2H2 burns in oxygen?
2. ### Chemistry

Calcium carbide, CaC2, can be produced in an electric furnace by strongly heating calcium oxide (lime) with carbon. The unbalanced equation is CaO(s) + C(s) ¨ CaC2(s) + CO(g) Calcium carbide is useful because it reacts readily with …
3. ### chemistry

Acetylene gas, c2h2, burns in oxygen to produce carbon dioxide and water. If 61.4 g of co2 are produced when 22.7g c2h2 react with sufficient oxygen, what is the percent yield for the reaction?
4. ### Chemu

Hi! I need help with my Chem homework. "When acetylene, C2H2, burns, how many liters of O2 at STp are used for every mole of acetylene burned?
5. ### Chemistry

Acetylene(C2H2) torches are used in welding. How much heat (in kJ) evolves when 2.0L of C2H2 (d=1.0967kg/m3) is mixed with a stoichiometric amount of oxygen gas?
6. ### chemistry

Acettlene gas (C2H2) is used in welding. During one job, a welder burns 48.0 g of acetylene. Using a balanced equation for the complete combustion of acetylene, calculate the following: Balanced Equation a) the mass of oxygen used …