Q3(d). Water condensed while ice melts and warms
A container with 100 g of ice at 0 °C is placed in a humid room whose temperature is 40 °C. The ice melts as water vapour condenses into the container. Assuming that all the heat transferred to the container comes from the condensation, how much water will have condensed in the container once all the ice is melted and has reached 40 °C? Given: Heat of fusion of ice = 334 J g⁻¹; heat of vaporization of water = 2260 J g⁻¹; heat capacity of water = 4184 J kg⁻¹ K⁻¹.
Answer in brief
22.2 g of water condenses.
Part of VKC Basic
Read the key points and the full model answer with VKC Basic
VKC Basic (₹999 for 6 months) opens every solved answer, the notes, the handbook and the daily answer archive. Every Mains test series includes it.
The full model answer
As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.
Coverslatent heat of fusionlatent heat of vaporisationheat balancecalorimetryspecific heat capacity
All parts of Question 3
- 3(a) Collisions of O₂ with the wall10 marks
- 3(b) Droplets made from one mole of water15 marks
- 3(c) Phase diagram of butane and two compressions10 marks
- 3(d) Water condensed while ice melts and warms10 marks
- 3(e) Why crystals have more defects at higher temperature5 marks