How much heat energy is required to melt 5 kg of ice? Specific latent heat of ice = 336 Jg-1
Answers
Step-by-step explanation:
Since you have 5 kg, you will need to pump 333.55 × 5 = 1667.75 kJ of heat into your ice to completely melt it.
Step-by-step explanation:
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11th
Chemistry
Thermodynamics
Enthalpy Change of a Reaction
How much heat energy is req...
CHEMISTRY
How much heat energy is required to change 2 kg of ice at 0
∘
C in water at 20
∘
C.
December 27, 2019
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Krishma Chopra
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ANSWER
Total heat = Heat required to convert 2kg of ice to 2kg of water at 0℃ +Heat required to convert 2kg of water at 0℃ to 2kg of water at 20℃
Heat=mhfg+mCp\Delta t$$
Here, m(mass of ice)=2kg
hfg(latent heat of fusion of ice)=334kJ
Cp of water(specific heat)=4.187 kJ/kg-k
Δt(temperature difference) =20℃
Therefore,
Heat required=2×334+2×4.187×(20−0)
=835.48 kJ
Therefore, to melt 2kg of ice 835.48kJ of heat is required.