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Calculate the amount of head required to...

Calculate the amount of head required to convert `1.00kg ` of ice at `- 10^(@)C` into stream at `100^(@)C` at normal pressure Specific heat of ice`= 2100J kg^(-1)K^(-1)` intent heat of fusion of ice`= 3.36 xx 10^(5)Jkg^(-1)` specific heat capacity of water `= 4200 Jkg^(-1)k^(-1)` and latent head of vaporisation of water `= 2.25 xx 10^(6)J kg^(-1)`

Text Solution

Verified by Experts

Here heat required to rise the temp of ice from `10^(@)C` to `0^(@)C`
`DeltaQ_(1) = s m Delta T = 2100 xx 1 xx 10 = 21000J`
Here heat required to melt the ice to` 0^(@)C`
`DeltaQ_(2) =m L= 1 xx 3.36 xx 10^(5)= 136000J`
Here heat required to rise the temp of water from `0^(@)C` to `100^(@)C`
`DeltaQ_(3) = s m Delta T = 4200 xx 1 xx 10 = 420,000J`
Here heat required to conven`100^(@)C` water to stream at `100^(@)C`
`DeltaQ_(4) = mL 1xx 2.25 xx 10^(6)J = 2250000J`
Here heat required `= DeltaQ_(1) + Delta Q_(2) + Delta Q_(3)+ Delta Q_(4) = 3027000 J`
`= 3.027 xx 10^(6)J`
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