Answer :
Final answer:
The acetylene regulator should be set to 5 PSI for oxyacetylene welding. To burn 9340 L of acetylene, 4 tanks of oxygen (each providing 7000 L) are required, based on the balanced chemical reaction of acetylene combustion.
Explanation:
Oxyacetylene Welding and Gas Pressure Settings
For oxyacetylene welding, the acetylene regulator should be set to a low pressure to prevent any risks associated with unstable acetylene. The typical pressure setting for the acetylene regulator is around 5 PSI (pounds per square inch). Setting the regulator correctly ensures a safe and controlled environment for welding. It is essential to consult the equipment's manufacturer specifications or a professional for the recommended pressure settings for specific welding tasks.
Calculating Required Oxygen Tanks for Acetylene Combustion
To calculate the number of oxygen tanks needed to burn a given amount of acetylene, we use the balanced chemical equation for the combustion of acetylene:
- 2 C2H2 + 5 O2
ightarrow 4 CO2 + 2 H2O
From the equation, we see that 2 volumes of acetylene require 5 volumes of oxygen to combust completely. Therefore, to burn 9340 L of acetylene, we need:
(9340 L C2H2) imes (5 L O2 / 2 L C2H2) = 23350 L O2
Since each oxygen tank provides 7000 L O2, the number of tanks required is:
23350 L O2 / 7000 L O2/tank
=
3.34 tanks
Hence, 4 tanks of oxygen are required to ensure complete combustion of the acetylene as we need to round up the decimal to the next full tank.
