STANDARDPhysics-Thermodynamics
STANDARD Physics Heat Capacity MCQ Question
Type: MCQ-numerical-Medium-Class 11
What amount of heat must be supplied 35 g oxygen at room temperature to raise its 80°C at constant volume? (molecular mass of oxygen is 32 and R = 8.3 J mol⁻¹ K⁻¹)
A
1.52 kJ
B
3.23 kJ
C
1.81 kJ
D
1.62 kJ
Correct Answer
Option C
Detailed Explanation
The heat supplied is calculated using Q = nCᵥΔT. With n = 1.09 mol and Cᵥ = (5/2)R, we find Q = 1.09 × (5/2) × 8.3 × 80 = 1.81 kJ.
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