How do you find the pressure of a eudiometer?
According to Dalton’s Law of Partial Pressures, the total gas pressure in the eudiometer is the sum of the pressure of the hydrogen gas collected plus the water vapor pressure. Symbolically, Ptotal = PH2 + PH20. Subtracting the water vapor pressure from the total pressure gives the pressure of the dry hydrogen gas.
How is the pressure of the gas in the eudiometer tube made equal to the atmospheric pressure?
The pressure of the gases in the eudiometer (collected gas + water vapor) will equal the atmospheric pressure in the room as long as the water level inside and outside of the eudiometer match. The pressure of the collected gas will be found by taking the room pressure and subtracting the vapor pressure of water.
Why must the difference between the water level in the eudiometer tube and the water level in the beaker be measured?
The pressure of the gases in the eudiometer tube must equal the atmospheric pressure. If the water levels are not at he same height, then this is not the case. Therefore, in order to account for this difference and get accurate results, you must subtract the water levels and convert to mmHg.
What does a eudiometer measure?
A eudiometer is a laboratory device that measures the change in volume of a gas mixture following a physical or chemical change.
What happens when the eudiometer is inverted?
The inverted eudiometer is placed inside a water bath. When the metal comes in contact with the acid, the reaction produces hydrogen gas. The hydrogen gas fills the eudiometer. The reaction continues until all the magnesium metal (which is the limiting reagent in this experiment) is completely consumed.
What is the pressure inside the tube due to the H2 G?
The pressure inside the tube due to H2 is 741 torr Also hydrogen gas and its accumulation over water contribute to the total pressure .
Is the pressure inside the eudiometer more or less than that of atmospheric pressure?
Therefore, the two gases: H2(g) and H2O(g) are both found in the eduiometer. Assuming the surface of liquid in te eudiometer is level with the water outside, the total pressure of the gases inside the eudiometer is the same as the atmospheric pressure.
What is a eudiometer used for?
Gas volume measurement
Eudiometer/Uses
How precise is a eudiometer?
Frey Scientific Eudiometer Tube with +/-5% accuracy is used to demonstrate the combining power of gases and gas volume measurements.
Why was it necessary to adjust the level of the eudiometer in the cylinder so that the level of water in the eudiometer was the same as the level of water in the cylinder?
The level of water in the eudiometer is adjusted so that it is equal to the level of water outside the eudiometer. This insures that the pressure in the eudiometer is equal to the prevailing atmospheric pressure.
What should be done to the eudiometer to ensure that the total pressure of gas in it is the same as the barometric pressure?
To ensure that the pressure of hydrogen (and water vapor) in the eudiometer is equal to atmospheric pressure, the level of the water inside the tube must be the same as the level of water outside the tube. To achieve this, transfer both the tube and the beaker of water into the large bucket of water in the sink.