Question

Calculate the amount of heat required to convert 50 g of ice at 0 c to steam

Answer 1

______✨ HEY MATE ✨______

➡️ YOUR ANSWER :-

⏭️The amount of heat required is 36 kcal.

There are three separate heats involved in this problem:

q1 = heat required to melt the ice to water at 0 °C

q2 = heat required to warm the water from 0 °C to 100 °C

q3 = heat required to convert the water to steam at 100 °C

q=q1+q2+q3=mΔfusH+mcΔT+mΔvapH

q1=mΔfusH=50g×80lcal⋅g-1=4 000 cal

q2=mcΔT=50g×1lcal⋅g-1°C-1×100°C=5 000 cal

q3=mΔvapH=50g×540lcal⋅g-1=27 000 cal

q=q1+q2+q3=4 000 cal + 5 000 cal + 27 000 cal=36 000 cal=36 kcal.

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