Purpose: to experimentally determine the mass percentage of two components (Al and Mg) in a mixture...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Purpose: to experimentally determine the mass percentage of two components (Al and Mg) in a mixture by collecting and measuring the gaseous product (H2). Equations: write the balanced chemical equations for the two reactions that are taking place in this experiment. 7 A1+6HCI ZAICI, + 3H₂ Mg + 2HC1 MgCl₂+ H₂ Procedure: 1) Obtain a sample of the Al/Mg mixture, weighing between 0.0200g -0.0300g. Accurately record the amount that you measure out. 2) Pour the mixture into a DRY test tube. Your apparatus will be set up as shown in the simple diagram below. Use a burette clamp and ring stand to hold the eudiometer in place, and hold the test tube in your hand. 3) Very quickly, add about 3 mL of 3M HCI to the test tube and put the rubber stopper into the mouth of the test tube before any gas can escape. Ensure that the gas is bubbling into the eudiometer. 0.003L, 3M t = 0.009 mols HCI 4) Once the reaction is complete (i.e. there is no metal left in your tube and bubbling has stopped), measure the volume of the gas produced and record. You must make sure that the pressure inside the eudiometer is equal to the atmospheric pressure before you measure the volume of the gas. Your teacher will demonstrate how to do this. 5) Dispose of chemicals as directed by your teacher and clean all glassware. PV=IRT Data: Mass of Al/Mg mixture used (in grams) Room temperature (in °C) Room temperature (in K-show calculation!) Water temperature (in °C) Atmospheric pressure (in kPa) Atmospheric pressure (in atm-show calculation!) Partial pressure of H2(g) (in atm-show calculation!). Volume of H2(g) produced (in mL) 0.0300g 22°C 22+273 295k 22°C 103.8 kPa 103.814 Paxlatm 101.325 kPa = 1.024 atm P1,024 afm-0.026 atm = 0.998 atm) P-32 9 33.9mL Volume of H2(g) produced 33.9mxx -0.0339 L (in L-show calculation!) 10³ AL Analysis: Calculate the percent by mass of aluminum and magnesium in the original mixture. (0.004 mol HC 1% Al = What are the sources of error in this experiment? % Mg= Purpose: to experimentally determine the mass percentage of two components (Al and Mg) in a mixture by collecting and measuring the gaseous product (H2). Equations: write the balanced chemical equations for the two reactions that are taking place in this experiment. 7 A1+6HCI ZAICI, + 3H₂ Mg + 2HC1 MgCl₂+ H₂ Procedure: 1) Obtain a sample of the Al/Mg mixture, weighing between 0.0200g -0.0300g. Accurately record the amount that you measure out. 2) Pour the mixture into a DRY test tube. Your apparatus will be set up as shown in the simple diagram below. Use a burette clamp and ring stand to hold the eudiometer in place, and hold the test tube in your hand. 3) Very quickly, add about 3 mL of 3M HCI to the test tube and put the rubber stopper into the mouth of the test tube before any gas can escape. Ensure that the gas is bubbling into the eudiometer. 0.003L, 3M t = 0.009 mols HCI 4) Once the reaction is complete (i.e. there is no metal left in your tube and bubbling has stopped), measure the volume of the gas produced and record. You must make sure that the pressure inside the eudiometer is equal to the atmospheric pressure before you measure the volume of the gas. Your teacher will demonstrate how to do this. 5) Dispose of chemicals as directed by your teacher and clean all glassware. PV=IRT Data: Mass of Al/Mg mixture used (in grams) Room temperature (in °C) Room temperature (in K-show calculation!) Water temperature (in °C) Atmospheric pressure (in kPa) Atmospheric pressure (in atm-show calculation!) Partial pressure of H2(g) (in atm-show calculation!). Volume of H2(g) produced (in mL) 0.0300g 22°C 22+273 295k 22°C 103.8 kPa 103.814 Paxlatm 101.325 kPa = 1.024 atm P1,024 afm-0.026 atm = 0.998 atm) P-32 9 33.9mL Volume of H2(g) produced 33.9mxx -0.0339 L (in L-show calculation!) 10³ AL Analysis: Calculate the percent by mass of aluminum and magnesium in the original mixture. (0.004 mol HC 1% Al = What are the sources of error in this experiment? % Mg=
Expert Answer:
Answer rating: 100% (QA)
The balanced chemical equations for the two reactions taking place in this experimen... View the full answer
Related Book For
Posted Date:
Students also viewed these chemical engineering questions
-
(x, y) = f(x) = 5 - 7x4 Describe the concavity. (Enter your answers using interv concave upward concave downward
-
Which ball will reach to the bottom first and use terms of kinetic energy and potential energy to explain why
-
a. Example 13-1: Batch Reactor with an Exothermic Reaction Wolfram 1. Adiabatic Case: Use Wolfram to see whether you can find a trajectory that is ready to ignite and whose trajectory looks like a...
-
It is stated in Section 40.3 that a finite potential well always has at least one bound level, no matter how shallow the well. Does this mean that as U 0 0, E 1 0? Does this violate the Heisenberg...
-
How far above the surface of the Earth does an object have to be in order for it to have the same weight as it would have on the surface of the Moon? (Ignore any effects from the Earth's gravity for...
-
Problem 1: Consider the figure below. A block of weight "W" slides on a horizontal surface with a coefficient of Coulomb friction "P". It is attached on its left face to a vertical surface by an...
-
The following documents are used in the expenditure cycle: Vendor invoice Purchase order Disbursement voucher Purchase requisition Packing slip Receiving report Check Required a. Identify which of...
-
We can use the data flow diagrams we completed to create data dictionary entries for all data flow and data stores, Chip says to Anna at their next meeting. Each of these components has a composition...
-
in a given survey, 32 out of 47 respondents said they prefer chocolate over vanilla. what is the standard error
-
The Organizational Development approach to change continues to dominate the literature because the value of this approach has been proven in practice.' Discuss this statement. 2. In drawing on...
-
The debt of INKA consists of two bonds. The first bond was issued in 2011, with a 15-year maturity and a 6% coupon rate. The second bond was issued in 2016, with a 10-year maturity and a 8% coupon...
-
What is a free expansion process? What are its characteristics?
-
Define COP of a heat pump and a refrigerator.
-
Define the term Entropy.
-
Differentiate between a heat pump and a refrigerator.
-
What are the characteristics of entropy?
-
2. Social and cultural change in organizations refers to the process of transforming the values, beliefs, norms, behaviors, and overall culture within an organization. It involves shifts in how...
-
Refer to the information from Exercise 22-19. Use the information to determine the (1) Weighted average contribution margin , (2) Break-even point in units, and (3) Number of units of each product...
-
The halogens form oxoacids with different amounts of oxygen. Explain why HClO 4 is a stronger acid than HClO 2 .
-
Solution A is a 1.0 m solution with a nonionic solute and water as the solvent. Solution B is a 1.0 m solution with the same nonionic solute and ethanol as the solvent. Which solution has the greater...
-
Convert 1285 cm 2 to m 2 . a) 1.285 * 10 7 m 2 b) 12.85 m 2 c) 0.1285 m 2 d) 1.285 * 105 m 2
-
Consider the following financial statements for Nixon Company. During the year, management obtained additional bond financing to enlarge its production facilities. The plant addition produced a new...
-
The following are the financial statements for Truman Company, with almost all dollar amounts missing: The following information is available about Truman Company's financial statements: 1. Quick...
-
Hardy Instruments, Inc., is a manufacturer of various measuring and controlling instruments. Financial statement data for the firm are as follows: Required a. Using the given data, calculate ratios 1...
Study smarter with the SolutionInn App