A steel tank contains carbon dioxide at a pressure of 13.0 atm when the temperature is 34oC. What will be the internal gas pressure when the tank and its contents are heated to 100oC

Answer:
D. 15.8atm
Explanation:
Given parameters:
Initial pressure = 13atm
Initial temperature = 34°C = 34 + 273 = 307K
Final temperature = 100°C = 100 + 273 = 373K
Unknown:
Final pressure = ?
Solution:
To solve this problem, we apply a derivation of the combined gas law taking the volume as a constant.
The expression is shown mathematically below;
[tex]\frac{P_{1} }{T_{1} }[/tex] = [tex]\frac{P_{2} }{T_{2} }[/tex]
P and T pressure and temperature values
1 and 2 are initial and final states
Insert the parameters and solve for T₂;
[tex]\frac{13}{307}[/tex] = [tex]\frac{P_{2} }{373}[/tex]
P₂ = 15.8atm
The final pressure will be "15.8 atm".
According to the question,
Initial pressure,
[tex]P_1 = 13.0 \ atm[/tex]
Initial temperature,
[tex]T_1 = 34+273[/tex]
[tex]= 307 \ k[/tex]
Final temperature,
[tex]T_2 = 100+273[/tex]
[tex]= 372 \ k[/tex]
By using the Gay-Lussac's law of pressure and temperature, we get
→ [tex]\frac{P_1}{T_1} = \frac{P_2}{T_2}[/tex]
or,
→ [tex]P_2 = \frac{P_1\times T_2}{T_1}[/tex]
By substituting the values, we get
→ [tex]= \frac{13.0\times 373}{307}[/tex]
→ [tex]= 15.8 \ atm[/tex]
Thus the response above is right.
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