However, there was a 0. Procedure: First, we used a balance to weigh the canister of gas, and recorded that mass as the original weight. Precautions Polish ribbon with steel wool cautiously. Part 3: Flame Test a. The flask was raised and lowered repeatedly until the water levels are the same inside and out to obtain the atmospheric pressure, which, according to Dalton's Law of Partial Pressures, equal to the sum of the partial pressures of oxygen and water vapor. Secure the foil with electrical tape. The Mg dissolved into the acid to produce MgCl2 Calculation cont.
A substance having neither a fixed shape nor a fixed volume is a gas; gases assume both the shape and the volume of their container. The pressure of the water vapor was found on the chart that was given at the start of the lab, and the pressure correlated with the temperature of the water. Calculate your percent error and list your major sources of error. These air bubbles would have affected the volume of the gas that was calculated. You will make an experimental determination of the number of moles of hydrogen molecules produced and the volume occupied by these molecules. In order to find the molar volume, hydrogen gas was produced in a eudiometer tube by reacting magnesium and hydrogen chloride. Page 9 6 — Bibliography ………………………………………….
Since the stopper had a hole, we had to put a finger over it while turning it upside down and putting it in the beaker with water. Repeat the experiment if time allows. I took my value of 22. Sensors and Equipment This experiment features the following Vernier sensors and equipment. In this the material we used was, a sip-lock plastic bag, a large plastic beaker, thermometry, dry ice, water, and butane lighter. To fix this we should have shook the container to allow the air bubbles to come to the top.
After the end of the second trial, everything was cleaned up. This volume is used to calculate the molar volume of hydrogen gas. We will use the combined gas law to do this. I took the mass of the Mg. Introduction In this lab, the experiment focused on the relationship between the temperature and pressure of an ideal gas that was dry ice inside the closed container. Place the small piece of paper towel on top of the filled graduated cylinder.
Split the strip into three segments as even as you can be with a scissors or by bending back and forth. I realized that the 1. Suppose that the water inside the gas-collecting flask was higher than the water level outside the flask. An experimental value of the molar volume of hydrogen gas can be determined by considering the stoichiometry of the reaction. Insert the one-hole rubber stopper firmly into the tube as shown in Figure 29-1. The conclusions showed that although hydrogen doesn't seem like it has a lot of volume at first, it really does How was the purpose of this experiment fulfilled? The structures of gases, and their behavior, are simpler than the structures and behavior of the two condensed phases, the solids and the liquids Pressure and the Law of Boyle Quantitative measurements on gases were first made in a rational manner. The length of a small section is measured, and the mass calculated from the length.
The temperature and barometric pressure are measured. Connect the gas delivery tube to the Pyrex test tube. A substance having a fixed volume and shape is a solid. Discussion: The molar volume of the H2 in our experiment is very close to the theoretical molar volume, but I think that the deviation lies in the temperature of the H2O: in the first trial it is too high and in the second one too low. The second source of error is that little pieces of magnesium did not react with the hydrochloric acid in the position they were in.
I then took the Barium sample wooden splint. Using these equations, such as density and number of moles n , we can substitute different values into the ideal gas law to manipulate it. Lab Report Determining the Molar Volume of a Gas Introduction: This lab was designed so that we, the students, could learn how to determine the molar volume of a gas effectively. Introduction A gas is the state of matter that is characterized by having neither a fixed shape nor a fixed volume. Bend the magnesium ribbon around the copper wire to 1623 Words 7 Pages Determination of Length, Mass, and Density Table of Contents 1 — Introduction ……………………………………………. When 57 was divided by 12, the result was 4. After discovering this, I corrected it and came up with the much more reasonable percentage error.
Ideal Gas Law Lab 1. Heating a flask filled with an unknown, easily evaporated liquid will allow for measurements that can be taken to work out the ideal gas equation. The number of moles of water in a hydrate was determined by taking the mass of the water released and dividing it by the molar mass of water. When hydrogen gas is made from the magnesium and hydrochloric acid, the container's environmental conditions are changed to Standard Temperature and Pressure. Also available is hydrochloric acid which contains exactly 2.