SOLVED: Acetylene torches are used for welding. These torches use a mixture of acetylene gas, C2H2, and oxygen gas, O2, to produce the following combustion reaction: 2C2H2(g) 5O2(g) → 4CO2(g) 2H2O(g).Imagine that you have a 7.00 L gas tank and a 3.00 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 125 atm, to what pressure should you fill the acetylene tank

SOLVED: The combustion of acetylene, C2H2, is often used in weldingapplications because of the intense heat that is produced. 2 C2H2 5 O2 → 2 H2O 4 CO2 ; ΔH° = -2512.4 kJ Calculate the amount ofheat produced during the complete combustion of 68.9 g of C2H2.

Oxy-Acetylene