A sealed rigid container holds gas at 127 °C and 200 kPa. The gas is heated to 177 °C. What is the new pressure?
Answer and explanation
Correct answer: A. 225 kPa
- Step 1: Convert to kelvin: K, K.
- Step 2: At constant volume , so kPa.
Answer
225 kPa.
Why not the others: 278.7 kPa: it uses temperatures in °C instead of kelvin. 250 kPa: it adds the temperature rise to the pressure. 177.8 kPa: it inverts the temperature ratio.
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