Q34 of 160 Page 36

Explain why, steam at 100°C is better for heating purposes than boiling water at 100 �C.

Steam has more energy than boiling water. It possesses the additional latent heat of vaporization. Therefore, steam at 1000 C is better for heating purposes as it steam would give out 22.5 x 10 5 joules per kilogram more heat than boiling water.


More from this chapter

All 160 →
32

Which contains more heat,1kg of ice at 0°C or 1 kg of water at 0°C? Give reason for your answer.

 33

Which contains more heat, 1 kg of water at 100°C or 1 kg of steam at 100°C? Give reason for your answer.

 35

Which produces more severe burns: boiling water or steam? Why?

 36

Why does the temperature of a substance remain constant during the change of state?