please solve the following , thank you. Acetylene torches are used for welding.
ID: 538972 • Letter: P
Question
please solve the following , thank you.
Acetylene torches are used for welding. These torches use a mixture of acetylene gas, C_2 H_2, and oxygen gas, O_2 to produce the following combustion reaction. 2C_2 H_2 (g) + 5O_2 (g) rightarrow 4CO_2 (g) + 2H_2 O (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 135 atm, to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases. Express your answer with the appropriate units.Explanation / Answer
large tank , V = 7 L
P = 135 atm
lets take Room temperature(T) = 298 k
from ideal gas equation , PV = nRT
no of mole of o2 = PV/RT
= 135*7/(0.0821*298)
= 38.6 mole
from the given equation
2 mole C2H2 = 5 mole O2
NO of mole of C2H2 required = 38.6*2/5 = 15.44 atm
from ideal gas equation , PV = nRT
P*3 = 15.44*0.0821*298
P = pressure of C2H2 gas = 125.92 atm
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