Magnesium And Calorimetry Lab
Introduction: Discovered in the early 1500s by an alchemist by the name of Paracelsus, then observed and recorded by Robert Boyle and later Henry Cavendish, hydrogen is the most abundant element on earth and is an essential element for life. This element makes up about 90% of all atoms, the most popular being water. Today, it is seen as the clean fuel of the future, is used in products such as fertilizer, and it helps aid in the production of plastics, pharmaceuticals, and even margarine. Also, hydrogen’s low density makes it a natural choice for filling balloons and airships (Robertson 6-10).
The molar volume of hydrogen gas is reliant on the number of moles of magnesium combined with excess hydrochloric acid. In simpler terms, the excess …show more content…
Obtain and use wire cutters or scissors to cut a piece of magnesium ribbon that measures roughly 2.3 to 2.4-cm in length. Measure and record the exact length in the Data Table to the nearest 0.1 cm. Use a conversion factor in grams per centimeter to calculate the mass by multiplying the length of the magnesium ribbon by the conversion factor. Record this mass in the Data Table. Next, procure a piece of copper wire that is 15-cm long and twist and fold one end of this wire to make a ‘cage’ where the magnesium ribbon will be inserted securely and firmly. (See Figure 1 for an example). Next, use the straight end of the copper wire - the end without the ‘cage’ - and insert it into a one-hole rubber …show more content…
This lab was carried out by reacting a known amount of Mg with HCl in a eudiometer tube filled with water so that volume of the gas created would be measurable. The main purpose of the lab was fulfilled because for both trials the percent error was fairly low which means this lab was completed with a close eye to directions and held little error. The calculated results for the molar volume of hydrogen gas for Trial One was 25.3 L/mol and Trial Two was 22.8 L/mol. Compared to the Literature value which was 22.4 L/mol these results were very close resulting in a percent error of Trial One being 12.9% and Trial Two only being 1.79%. These results represent a good understanding of the topics covered because no percent error would be highly unexpected because the smallest changes or slips in either information or steps in the lab would affect the
The molar volume of hydrogen gas is reliant on the number of moles of magnesium combined with excess hydrochloric acid. In simpler terms, the excess …show more content…
Obtain and use wire cutters or scissors to cut a piece of magnesium ribbon that measures roughly 2.3 to 2.4-cm in length. Measure and record the exact length in the Data Table to the nearest 0.1 cm. Use a conversion factor in grams per centimeter to calculate the mass by multiplying the length of the magnesium ribbon by the conversion factor. Record this mass in the Data Table. Next, procure a piece of copper wire that is 15-cm long and twist and fold one end of this wire to make a ‘cage’ where the magnesium ribbon will be inserted securely and firmly. (See Figure 1 for an example). Next, use the straight end of the copper wire - the end without the ‘cage’ - and insert it into a one-hole rubber …show more content…
This lab was carried out by reacting a known amount of Mg with HCl in a eudiometer tube filled with water so that volume of the gas created would be measurable. The main purpose of the lab was fulfilled because for both trials the percent error was fairly low which means this lab was completed with a close eye to directions and held little error. The calculated results for the molar volume of hydrogen gas for Trial One was 25.3 L/mol and Trial Two was 22.8 L/mol. Compared to the Literature value which was 22.4 L/mol these results were very close resulting in a percent error of Trial One being 12.9% and Trial Two only being 1.79%. These results represent a good understanding of the topics covered because no percent error would be highly unexpected because the smallest changes or slips in either information or steps in the lab would affect the