DISCUSSION
For this experiment, we are conducted the experiment about the market boiler. Marcet boiler was made by Nathan Chamberlain, Boston, USA, in the year 1850. He made this boiler for measuring the vapor pressure of sat urated liquid. Later this Marcet boiler was used to study the evaporation filtration of water. Pressure and temperature are two fundamental quantities of materials in thermodynamics. These two factors have relation directly proportional to each other. The temperature and the pressure are compared by the graphs plotted based on the tabulated tabulated data as for both were almost constant throughout the experiment. The air from the boiler should be removed to avoid it from rapping inside the boiler as it can effects the accuracy of the reading during the experiment. When there were air trapped inside the boiler, it will affect af fect the pressure readings. Based on the graphs, the relationship between pressure and temperature is directly proportional and there is a slightly deviation between the experimental slope and the theoretical sl ope at the beginning. This is because, When a container contains saturated liquid and are heated to it’s it ’s boiling temperature, the liquid will be changing it’s state from liquid to steam. If the steam are not allowed to escape from the container, their internal pressure will increase Because, when the liquid becomes gas by heating, the internal molecular ener gy will increase and the atoms will be more excited. All the excited atoms will hit each other and split with more speed or velocities. As their mass remains constant, so their forces on each other will increases. And when their forces on them increase s, and are not allowed to occupy more area, they exerts pressure on the container, which gradually increas es with temperature. Hence it is calculated and proved from the graph, that temperature is directl y proportional to the pressure. The error percentage should not cross or exceed 10%, as the experiment was done in enclosed surface and no volume of experimenting samples are allowed to escape from the system. That is done in closed system. It is important to remove gas at the beginning to a void the flaws of reading due to pressure difference. Marcet boiler boile r is being used as water boiler, gasifier, powerplant, cooking utensils, steam plant industries, etc.
CONCLUSION.
From the experiment, it is found from the graph and calculation, temperature of a saturated steam is directly proportional to the pressure in equilibrium with water. When the temperature of steam increase, the pressure also will increase and vice versa. Besides, This is proved with the graph of average temperature against the absolute pressure plotted above by using the data collected from the experiment.
