In a closed container , 500 g of steam is cooled until all the steam becomes water . The container is then cooled further until all the water becomes ice . Which of the following remains the same during both of these changes ?
A)the mass of the water
B)the pressure in the container
C)the temperature of the water
D)the volume of the water
Dear Student,
Since the container is closed, the mass will remain constant.
Steam is gas and ice is solid, gases exert more pressure on the walls of container, so the pressure of the container is not constant.
Steam is formed at or above100°C and is converted into water by decreasing the temperature below 100°C. Ice is formed on further cooling of water to or below 0°C,so temperature of water is also not constant.
Steam will have volume greater than water and ice, so volume is also not constant.
Correct answer is (A)
Regards
Since the container is closed, the mass will remain constant.
Steam is gas and ice is solid, gases exert more pressure on the walls of container, so the pressure of the container is not constant.
Steam is formed at or above100°C and is converted into water by decreasing the temperature below 100°C. Ice is formed on further cooling of water to or below 0°C,so temperature of water is also not constant.
Steam will have volume greater than water and ice, so volume is also not constant.
Correct answer is (A)
Regards