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Latent Heat Formula
- The heat required to transform a substance to a fluid or gaseous state, or fluid to a gaseous form, is latent heat.
- Condensed water heat, vaporisation heat, and so forth are several of the ones given to it based on the various phases.
- Latent heat is the energy used or released by a substance throughout a phase shift. It might be a transition from a gaseous phase or a substantial change and back.
- Latent heat is connected to the heat characteristic enthalpy.
The latent heat Formula is as follows:
L = Q/M
where,
L = a substance’s specific latent heat
Q = quantity of heat
M = the substance’s mass
The equation for Latent Heat of Vaporization
- Latent heat of vaporisation seems to be the heat absorbed or emitted as matter fades away, switching phase from liquid to fixed amount of gas temp.
- The most well-known source of heat is liquid vaporisation. The quantity of heat necessary to turn 1 g of something like a liquid into a vapour without affecting the fluid’s temperature is the heat of vaporisation.
Solved Examples
- Calculate the estimated latent heat of a 5 kg substance if the amount of heat required for a phase shift is 300 kcal.
The parameters are as follows:
Q = 300 kcal
M = 5 kg
The latent heat formula is as follows:
L = Q / M
L = 300 / 5
L = 60 kcal/kg
As a result, the latent heat value is 60 kcal/kg.
- A chunk of metal seems to weigh 60g around 20°C. 0.5g of the vapour condenses before being submerged in a steam stream at 100°C. Compute the particular heat of the metal, assuming the latent heat for steam = 540 cal/g.
Let c become the metal’s specific heat. The metal has gathered heat.
Q = mcΔt
Q = 60 x c x (100 – 20)
Q = 60 x c x 80 cal
The steam’s heat is expelled.d
Q = m × L
Q = 0.5 × 540 cal
According to the concept of mixing, the amount of heat provided is equal to the amount of heat absorbed.
0.5 × 540 = 60 × c ×80
c = 0.056 cal/g ⁰C
As a result, the specific heat value at 0C is 0.056 cal/g.
