Calculate the heat transferred to the system when 1.00 mol of a perfect gas expands reversibly at a
Constant temperature of 25°C so that its volume doubles.

Respuesta :

Answer:

The heat transferred to the system is 1717.322 J

Explanation:

Given data:

n = moles of gas = 1 mol

T = temperature = 25°C = 298 K

Question: Calculate the heat transferred, Q = ?

[tex]\frac{V_{2} }{V_{1} } =2[/tex] (volume doubles due the gas expasion)

The heat transferred:

[tex]Q=nRTln(\frac{V_{2} }{V_{1} } )[/tex]

Here

R = ideal gas constant = 8.314 J/mol K

[tex]Q=1*8.314*298*ln(2)=1717.322J[/tex]

The heat transferred to the system is 1717.32 J

Let the initial volume (V₁) = v

Therefore,

The final volume (V₂) = 2v

From the question given above, the following data were obtained:

  • Number of mole (n) = 1 mole
  • Temperature (T) = 25 °C = 25 + 273 = 298 K
  • Gas constant (R) = 8.314 J/Kmol
  • Heat transfered (Q) =?

Q = nRTln(V₂/V₁)

Q = 1 × 8.314 ×298 × ln(2v/v)

Q = 2477.572 × ln2

Q = 1717.32 J

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