Steam at 100ºC is passed into 2.0 kg of water contained in a calorimeter of water equivalent 0.02 kg at 15ºC till the temperature of the calorimeter and its contents rise to 90ºC. The mass of steam condensed in kg is
Text Solution
Verified by ExpertsThe correct answer is:
B
(Water + caloriemetry) From 15°c to 90°c. Heat required to raise temperature of
Δ Q 1 = 2000 × 1 × (90 –15) + 0.02 × 1000 (90 – 15)
Δ Q 2 = m × 540 + m × (100 – 90)
Δ Q 1 = Δ Q 2
2000 × 75 + 20 × 75 = m[540 + 10]
m = 
= 
gm
= 
= 0.280 kg
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