Thermodynamics: Practice Problem & Solution
The temperature of a gas contained in a closed vessel increases by 2°C, when the pressure is increased by 2%. The initial temperature of the gas is :
Solution Explained:
To solve this problem, we apply the core principles of Thermodynamics. Understanding the underlying formula is key to arriving at the correct answer below:
Given:
- The increase in temperature \(\Delta T = 2^\circ \text{C} = 2 \text{ K}\)
- The increase in pressure \(\frac{\Delta P}{P} = 2\% = 0.02\)
Using the relation for a gas at constant volume, \(\frac{\Delta P}{P} = \frac{\Delta T}{T}\):
\[
0.02 = \frac{2}{T}
\]
Solving for \(T\):
\[
T = \frac{2}{0.02} = 100 \text{ K}
\]
Answer: \(T = 100 \, \text{K}\)
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