Please explain introduction in your own words Understand the ideal Gas Law. Usin
ID: 994784 • Letter: P
Question
Please explain introduction in your own words Understand the ideal Gas Law. Using dry ice, confirm the value of the gas constant Background Information Empirical gas laws (Boyle's law. Charles's Law and Avogadro's law) can be combined to produce the Ideal Gas Law PV = nRT or PV/nT = R (a constant) (eq. 1) To determine the value of Gas Constant, R, you need to obtain P, V, T and the number of moles of gas in the container. Pressure and Temperature are easily determined by the reading of barometer and thermometer in the lab. Now. you need to find the number of moles (or mass) of the gas and the volume of the flask. In this experiment, you will measure the mass of a sealed flask filled with CO_2 to determine the mass of CO_2 in the flask as well as the volume of the flask. Keep in mind that you already have air in the flask before CO_2 was introduced. Simple weighing of the seated flask on a balance will give you the mass of the sealed flask with air (density of dry air is 1.2754 g/L in 0.00 degree C, 1.00 atm). Since d=m/V and V T/P, the density of a gas is proportional to P/T or dT/P is a constant. d_1 T_1/P_1 = d_2 T_2/P_2 Based on the average mass of the air (80 % N_2 and 20% O_2). you can also calculate the density of the air under room temperature and pressure, then the mass of the air in the flask. To determine V, you will fill the flask with water, and measure the volume of the water that the flask now contains by pouring it into a graduated cylinder.Explanation / Answer
Solution :-
Introduction :-
The major aim of this lab experiment is determine the gas constant R using the dry ice as the source of the gas moles. A dry and clean flask was covered with the paraffin piece and then its weight was recorded when it is empty then small peice of the dry ice was placed in the flask and small pores are made to escape the gas when all dry ice sublimes. Then again the weight of the flask was recorded. The difference in the weight of the flask with CO2 gas and empty flask weight gives the amount of gas present in the flask at the room temperature and pressure. The volume of the flask is determined by filling the flask with water and then measured the amount of water. The mass of the gas can be converted to the moles of gas in the flask and then used in the calculation of the gas law constant.
Temperature of the room . atmospheric pressure, volume and moles of gas values when plugin the ideal gas law formula then we can find the value of the gas constant R as
R= PV/ nT
where , P= pressure . V= volume , n= moles of gas , T= temperature and R = gas constant.