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Reaction 3 (copper (II) hydroxide → copper (II) oxide] Danger! Do not open the centrifuge until it reaches a complete stop! 1. Heat the contents of your centrifuge tube in the hot water bath. Use a clamp to support the tube so the bottom of the tube does not touch the bottom of the beaker and the solution in the tube is below the level of the water in the bath. 2. Continue heating until all the material is converted into a brown-black substance, copper(II) oxide. Stir occasionally with your glass stir rod, pushing any solid stuck on the sides down into the hot solution. Remember to rinse any solid that sticks to the stir rod back down into the solution with small amounts of DI water. Cool for 5 minutes. 3. Place the centrifuge tube in the centrifuge across from a tube of another student which is filled to the same height. (The centrifuge must be balanced in order to operate correctly.) Turn on the centrifuge for a minute or so. After the centrifuge comes to a complete stop, remove your tube from it. All of the copper (II) oxide should have settled to the bottom of the tube, leaving a clear liquid above. If not, centrifuge the tube another time. 4. Decant (pour off) as much of the liquid as you can into your own waste beaker at your lab bench. Do not lose any of the copper (II) oxide. 5. Wash the copper (II) oxide by adding about 3mL of deionized water to the centrifuge tube and stirring gently with the glass stir rod. Be sure to wash the stir rod back into the centrifuge tube so you do not lose product! Centrifuge and decant the contents again. 6. Record observations. In addition to the copper (II) oxide, water is also formed as a product in this reaction. The reaction is: copper (II) hydroxide → copper (II) oxide + water

Reaction 3 (copper (II) hydroxide → copper (II) oxide] Danger! Do not open the centrifuge until it reaches a complete stop! 1. Heat the contents of your centrifuge tube in the hot water bath. Use a clamp to support the tube so the bottom of the tube does not touch the bottom of the beaker and the solution in the tube is below the level of the water in the bath. 2. Continue heating until all the material is converted into a brown-black substance, copper(II) oxide. Stir occasionally with your glass stir rod, pushing any solid stuck on the sides down into the hot solution. Remember to rinse any solid that sticks to the stir rod back down into the solution with small amounts of DI water. Cool for 5 minutes. 3. Place the centrifuge tube in the centrifuge across from a tube of another student which is filled to the same height. (The centrifuge must be balanced in order to operate correctly.) Turn on the centrifuge for a minute or so. After the centrifuge comes to a complete stop, remove your tube from it. All of the copper (II) oxide should have settled to the bottom of the tube, leaving a clear liquid above. If not, centrifuge the tube another time. 4. Decant (pour off) as much of the liquid as you can into your own waste beaker at your lab bench. Do not lose any of the copper (II) oxide. 5. Wash the copper (II) oxide by adding about 3mL of deionized water to the centrifuge tube and stirring gently with the glass stir rod. Be sure to wash the stir rod back into the centrifuge tube so you do not lose product! Centrifuge and decant the contents again. 6. Record observations. In addition to the copper (II) oxide, water is also formed as a product in this reaction. The reaction is: copper (II) hydroxide → copper (II) oxide + water

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Reaction 3?
Reaction 3 [copper (II) hydroxide → copper (II)oxide] 4- Copper to Copper Danger! Do not open the centrifuge until it reaches a complete stop! 1. Heat the contents of your centrifuge tube in the hot water bath. Use a clamp to support the tube so the bottom of the tube does not touch the bottom of the beaker and the solution in the tube is below the level of the water in the bath. 2. Continue heating until all the material is converted into a brown-black substance, copper(II) oxide. Stir occasionally with your glass stir rod, pushing any solid stuck on the sides down into the hot solution. Remember to rinse any solid that sticks to the stir rod back down into the solution with small amounts of DI water. Cool for 5 minutes. 3. Place the centrifuge tube in the centrifuge across from a tube of another student which is filled to the same height. (The centrifuge must be balanced in order to operate correctly.) Turn on the centrifuge for a minute or so. After the centrifuge comes to a complete stop, remove your tube from it. All of the copper (II) oxide should have settled to the bottom of the tube, leaving a clear liquid above. If not, centrifuge the tube another time. 4. Decant (pour off) as much of the liquid as you can into your own waste beaker at your lab bench. Do not lose any of the copper (II) oxide. 5. Wash the copper (II) oxide by adding about 3mL of deionized water to the centrifuge tube and stirring gently with the glass stir rod. Be sure to wash the stir rod back into the centrifuge tube so you do not lose product! Centrifuge and decant the contents again. 6. Record observations. In addition to the copper (II) oxide, water is also formed as a product in this reaction. The reaction is: copper (II) hydroxide → copper (II) oxide + water
Transcribed Image Text:Reaction 3 [copper (II) hydroxide → copper (II)oxide] 4- Copper to Copper Danger! Do not open the centrifuge until it reaches a complete stop! 1. Heat the contents of your centrifuge tube in the hot water bath. Use a clamp to support the tube so the bottom of the tube does not touch the bottom of the beaker and the solution in the tube is below the level of the water in the bath. 2. Continue heating until all the material is converted into a brown-black substance, copper(II) oxide. Stir occasionally with your glass stir rod, pushing any solid stuck on the sides down into the hot solution. Remember to rinse any solid that sticks to the stir rod back down into the solution with small amounts of DI water. Cool for 5 minutes. 3. Place the centrifuge tube in the centrifuge across from a tube of another student which is filled to the same height. (The centrifuge must be balanced in order to operate correctly.) Turn on the centrifuge for a minute or so. After the centrifuge comes to a complete stop, remove your tube from it. All of the copper (II) oxide should have settled to the bottom of the tube, leaving a clear liquid above. If not, centrifuge the tube another time. 4. Decant (pour off) as much of the liquid as you can into your own waste beaker at your lab bench. Do not lose any of the copper (II) oxide. 5. Wash the copper (II) oxide by adding about 3mL of deionized water to the centrifuge tube and stirring gently with the glass stir rod. Be sure to wash the stir rod back into the centrifuge tube so you do not lose product! Centrifuge and decant the contents again. 6. Record observations. In addition to the copper (II) oxide, water is also formed as a product in this reaction. The reaction is: copper (II) hydroxide → copper (II) oxide + water
PRELAB Assignment Lab Day: IMPORTANT DIRECTIONS: After reading the entire handout, complete the following diagrams of the five reactions steps. The first one is done for you, as an example of what is expected. This is due at the start of lab. You will NOT be allowed to complete this lab (at any time and will receive a score of '0') without turning in this COMPLETED page at the start of lab. Reaction 1: Balanced Reaction Equation Reaction 2: Balanced Reaction Equation Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO2(g) + 2H₂O(l) List of substances added to centrifuge tube: 1. Copper 2. 3. water 6M Nitric acid Name: AND Amount of each substance added: 1. 15 cm x 2.5 cm 2. 1.5 mL 3. Until tube is 2/3 full Safety hazards to be aware of (give at least one!): List of substances added to centrifuge tube: 1. Acid is corrosive 2. NO₂ gas is toxic, keep under Fume Hood! Color of the copper product: blue solution Reaction 3: Balanced Reaction Equation: AND Amount of each substance added: Safety hazards to be aware of (give at least one!): Color of the resulting copper product: List of substances added to centrifuge tube: 4- Copper to Copper AND Amount of each substance added: Safety hazards to be aware of (give at least one!): Color of the copper product: List of substances added to centrifuge tube: Reaction 4: Balanced Reaction Equation: AND Amount of each substance added: Safety hazards to be aware of (give at least one!): Color of the resulting copper product: ... 4-5
Transcribed Image Text:PRELAB Assignment Lab Day: IMPORTANT DIRECTIONS: After reading the entire handout, complete the following diagrams of the five reactions steps. The first one is done for you, as an example of what is expected. This is due at the start of lab. You will NOT be allowed to complete this lab (at any time and will receive a score of '0') without turning in this COMPLETED page at the start of lab. Reaction 1: Balanced Reaction Equation Reaction 2: Balanced Reaction Equation Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO2(g) + 2H₂O(l) List of substances added to centrifuge tube: 1. Copper 2. 3. water 6M Nitric acid Name: AND Amount of each substance added: 1. 15 cm x 2.5 cm 2. 1.5 mL 3. Until tube is 2/3 full Safety hazards to be aware of (give at least one!): List of substances added to centrifuge tube: 1. Acid is corrosive 2. NO₂ gas is toxic, keep under Fume Hood! Color of the copper product: blue solution Reaction 3: Balanced Reaction Equation: AND Amount of each substance added: Safety hazards to be aware of (give at least one!): Color of the resulting copper product: List of substances added to centrifuge tube: 4- Copper to Copper AND Amount of each substance added: Safety hazards to be aware of (give at least one!): Color of the copper product: List of substances added to centrifuge tube: Reaction 4: Balanced Reaction Equation: AND Amount of each substance added: Safety hazards to be aware of (give at least one!): Color of the resulting copper product: ... 4-5
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