Heat needed to convert 1 kilogram ice at 0° C to steam at 100° C is (in Kcal ):-

Question

Heat needed to convert 1 kilogram ice at 0° C to steam at 100° C is (in Kcal ):- (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Heat required to melt 1kg ice into water at 0° C=80kcal. Heat required to raise temperature of 1kg water from 0° C to 100° C . =m S ⋅ Δ t=(1 kg ) ×(1 kcal kg -1 ° C ) ×(100-0) =100 kcal Heat required to convert 1kg boiling water into steam at 100° C =mL=1kg× 540kcalg- 1=540kcal Thus, total heat required to convert 1kg of ice at 0° C into steam at 100° C =80+100+540=720kcal

Q. Heat needed to convert 1 kilogram ice at 0∘C to steam at 100∘C is (in Kcal ):-

Q. Heat needed to convert $1$ kilogram ice at $0^{\circ} C$ to steam at $10 0^{\circ} C$ is (in $Kc a l$ ):-