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Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IFirst law of ThermodynamicsMedium2 minPYQ_2003

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The molar heat capacity of water at constant, pressure, $C$ , is $75 J K^{- 1} mol^{- 1}$ . When 1.0 $kJ$ of heat is supplied to $100 g$ of water which is free to expand, the increase in temperature of water is:NEET 2003

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Solution:

Molar heat capacity $= 75 J K^{- 1} mol^{- 1}$ $18 g of water = 1 mole = 75 J K^{- 1} mol^{- 1} 1 g of water = \frac{75}{18} JK^{- 1} Q = m.c. Δ t$ $1000 \Rightarrow Δ t = 100 \times \frac{75}{18} \times Δ t = \frac{10 \times 18}{75} = 2.4 K$

Stream:NEETSubject:ChemistryTopic:Thermodynamics - ISubtopic:First law of Thermodynamics

⏱ 2mℹ️ Source: PYQ_2003

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