Calculate heat required to convert 3 kg of water at 0ºC to steam at 1

1.	Calculate heat required to convert 3 kg of water at 0ºC to steam at 100ºC. Given specific heat capacity of H2O = 4186 J kg–1k–1 and latent heat of steam = 2.256 × 106 J/kg.
Answer» Heat required to convert H₂O at 0º to H₂O at 100º = m₁c₁t = 30 × 4186 × 100 = 1255800 J Heat required to convert H₂O at 100ºC to steam at 100ºC is = mL = 3 × 2.256 × 10⁶ = 6768000 J Total heat = 8023800 J

Calculate heat required to convert 3 kg of water at 0ºC to steam at 100ºC. Given specific heat capacity of H2O = 4186 J kg–1k–1 and latent heat of steam = 2.256 × 106 J/kg.

Answer»

Heat required to convert H₂O at 0º to H₂O at 100º = m₁c₁t

= 30 × 4186 × 100 = 1255800 J

Heat required to convert H₂O at 100ºC to steam at 100ºC is = mL

= 3 × 2.256 × 10⁶

= 6768000 J

Total heat = 8023800 J