Respuesta :
A combustion reaction occurs in the presence of oxygen. The moles of carbon dioxide produced after the complete combustion is 0.0171 moles.
What is an ideal gas equation?
An ideal gas equation establishes the relation between temperature, pressure, volume, and the moles of the gas present in a system.
The ideal gas equation is given as:
[tex]\rm PV = \rm nRT[/tex]
Given,
Pressure (P) of carbon dioxide = 0.868 atm
Volume (V) of carbon dioxide = 0.5 L
Temperature (T) of carbon dioxide = 308.15 K
Substituting values in the ideal gas equation, n can be calculated as:
[tex]\begin{aligned} \rm n &= \rm \dfrac{PV}{RT}\\\\&= \rm \dfrac {0.868 \times 0.5}{ 0.0821 \times 308.15}\\\\&= 0.0171 \;\rm moles\end{aligned}[/tex]
Therefore, after the complete combustion, 0.0171 moles of carbon dioxide will be produced.
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After completing the reaction, moles of the produced carbon dioxide gas is 0.0171 moles.
How do we calculate the moles of gas?
Moles of gas will be calculated by using the ideal gas equation as:
PV = nRT, where
P = pressure of CO₂ = 0.868 atm
V = volume of flask = 500mL =0.5L
R = universal gas constant = 0.0821 L.atm / K.mol
T = temperature of CO₂ = 35°C = 308.15 K
n = moles of CO₂ = ?
On puttiung values on the above equation, we get the value of n as"
n = (0.868)(0.5) / (0.0821)(308.15)
n = 0.434 / 25.3 = 0.0171 moles
Hence required moles are 0.0171 moles.
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