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Two moles of an ideal mono-atomic gas un...

Two moles of an ideal mono-atomic gas undergoes a thermodynamic process in which the molar heat capacity `'C'` of the gas depends on absolute temperature as `C=(RT)/(T_(0))`, where `R` is gas consant and `T_(0)` is the initial temperature of the gas. (`V_(0)` is the initial of the gas). Then answer the following questions:
The equation of process is

A

`1/P=(V_(0)T_(0)^(3//2))/(4RT^(5/2))e^((T-T_(0)/(T_(0)))`

B

`1/P=(V_(0)T_(0)^(3//2))/(2RT^(5/2))e^((T-T_(0)/(T_(0)))`

C

`1/P=(V_(0)T_(0)^(3//2))/(4RT^(5/2))e^((T+T_(0)/(T_(0)))`

D

`1/P=(V_(0)T_(0)^(3//2))/(3RT^(5/2))e^((T-T_(0)/(T_(0)))`

Text Solution

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The correct Answer is:
To solve the problem, we need to find the equation of the process for the given thermodynamic conditions of the ideal monoatomic gas. Here’s a step-by-step breakdown of the solution: ### Step 1: Understand the Given Information We have: - 2 moles of an ideal monoatomic gas. - The molar heat capacity \( C \) depends on absolute temperature \( T \) as \( C = \frac{RT}{T_0} \), where \( R \) is the gas constant and \( T_0 \) is the initial temperature. - \( V_0 \) is the initial volume of the gas. ### Step 2: Apply the First Law of Thermodynamics The first law of thermodynamics states: \[ dq = dU + dW \] Where: - \( dq \) is the change in heat, - \( dU \) is the change in internal energy, - \( dW \) is the work done. ### Step 3: Express \( dq \), \( dU \), and \( dW \) For an ideal gas, we can express: \[ dq = nC dT \] \[ dU = nC_v dT \] \[ dW = P dV \] Where \( C_v \) for a monoatomic gas is \( \frac{3}{2}R \). ### Step 4: Substitute the Values Substituting \( n = 2 \) moles and \( C \): \[ dq = 2 \cdot \frac{RT}{T_0} dT \] \[ dU = 2 \cdot \frac{3}{2}R dT = 3R dT \] Using the ideal gas law \( PV = nRT \), we can express pressure \( P \): \[ P = \frac{nRT}{V} = \frac{2RT}{V} \] Thus, the work done becomes: \[ dW = \frac{2RT}{V} dV \] ### Step 5: Combine the Equations Now substituting these into the first law equation: \[ 2 \cdot \frac{RT}{T_0} dT = 3R dT + \frac{2RT}{V} dV \] Dividing through by \( R \): \[ \frac{2T}{T_0} dT = 3 dT + \frac{2T}{V} dV \] ### Step 6: Rearranging the Equation Rearranging gives: \[ \left(\frac{2}{T_0} - 3\right) dT = \frac{2}{V} dV \] This can be simplified to: \[ \frac{1}{T_0 - \frac{3}{2}T} dT = \frac{1}{V} dV \] ### Step 7: Integrate Both Sides Integrating both sides with limits \( T_0 \) to \( T \) and \( V_0 \) to \( V \): \[ \int_{T_0}^{T} \frac{1}{T_0 - \frac{3}{2}T} dT = \int_{V_0}^{V} \frac{1}{V} dV \] This results in: \[ \ln\left|T_0 - \frac{3}{2}T\right| = \ln\left|V\right| - \ln\left|V_0\right| + C \] ### Step 8: Solve for the Equation of the Process Exponentiating both sides gives: \[ T_0 - \frac{3}{2}T = \frac{V}{V_0} e^C \] Rearranging gives the equation of the process. ### Final Equation The final equation can be expressed in terms of \( V \) and \( T \), leading to: \[ V = V_0 \left(\frac{T_0}{T}\right)^{\frac{3}{2}} e^{\frac{T - T_0}{T_0}} \]

To solve the problem, we need to find the equation of the process for the given thermodynamic conditions of the ideal monoatomic gas. Here’s a step-by-step breakdown of the solution: ### Step 1: Understand the Given Information We have: - 2 moles of an ideal monoatomic gas. - The molar heat capacity \( C \) depends on absolute temperature \( T \) as \( C = \frac{RT}{T_0} \), where \( R \) is the gas constant and \( T_0 \) is the initial temperature. - \( V_0 \) is the initial volume of the gas. ...
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