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(a) Observation on adding acid to zinc When a acd is added to ziha nappening where tine is abidizeod fromtota a reday reaatvon is Tests on the Hydrogen Gas (a) Test on igniting hydrogen/air mixture

(a) Observation on adding acid to zinc When a acd is added to ziha nappening where tine is abidizeod fromtota a reday reaatvon is Tests on the Hydrogen Gas (a) Test on igniting hydrogen/air mixture

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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Answer questions 2d and questions 4 A-J
**Report 4: Preparation and Properties of Hydrogen and Oxygen** **1. Generation and Collection of Hydrogen Gas** (a) **Observation on adding acid to zinc** - "When acid is added to zinc, a reaction is happening where zinc is oxidized from Zn to Zn²⁺." **2. Tests on the Hydrogen Gas** (a) **Test on igniting hydrogen/air mixture** - "When they are both ignited, the energy needed is low since hydrogen is in very less amount in the air and doesn't give out high energy output." (b) **Test on igniting pure hydrogen** - "When hydrogen is ignited in a splint, a pop sound is heard." (c) **Attempt to ignite hydrogen after inverting bottle** - "To know it's hydrogen, since oxygen is also there, you can hear small pops when hydrogen and oxygen are being burned." (d) **Explain your observations from parts a-c** (e) **(Unlabeled Notes)** - "Match happened in air only and why" - "(E) 4th bottle" **3. Generation and Collection of Oxygen Gas** (a) **Observation on adding hydrogen peroxide to yeast** - "What + why" **4. Tests on the Oxygen Gas** (a) **Result of attempting to ignite oxygen** (b) **Result of inserting glowing splint into the second bottle of oxygen** --- Note: The text includes handwritten annotations for observations and experiments related to hydrogen and oxygen gases. There are no graphs or diagrams in this document.
Transcribed Image Text:**Report 4: Preparation and Properties of Hydrogen and Oxygen** **1. Generation and Collection of Hydrogen Gas** (a) **Observation on adding acid to zinc** - "When acid is added to zinc, a reaction is happening where zinc is oxidized from Zn to Zn²⁺." **2. Tests on the Hydrogen Gas** (a) **Test on igniting hydrogen/air mixture** - "When they are both ignited, the energy needed is low since hydrogen is in very less amount in the air and doesn't give out high energy output." (b) **Test on igniting pure hydrogen** - "When hydrogen is ignited in a splint, a pop sound is heard." (c) **Attempt to ignite hydrogen after inverting bottle** - "To know it's hydrogen, since oxygen is also there, you can hear small pops when hydrogen and oxygen are being burned." (d) **Explain your observations from parts a-c** (e) **(Unlabeled Notes)** - "Match happened in air only and why" - "(E) 4th bottle" **3. Generation and Collection of Oxygen Gas** (a) **Observation on adding hydrogen peroxide to yeast** - "What + why" **4. Tests on the Oxygen Gas** (a) **Result of attempting to ignite oxygen** (b) **Result of inserting glowing splint into the second bottle of oxygen** --- Note: The text includes handwritten annotations for observations and experiments related to hydrogen and oxygen gases. There are no graphs or diagrams in this document.
**Experiment 4: Preparation and Properties of Hydrogen and Oxygen Gases** **(c)** Results of all glowing splint tests involving the two bottles of air and the third bottle of oxygen. **(d)** Results of the tests with the candle, the fourth bottle of oxygen and a bottle of air. **(e)** Results of the test with hot steel wool, the fifth bottle of oxygen and a bottle of air. **(f)** Explain the similarities and differences in the glowing splint tests for the second bottle of oxygen, the bottle of air and the two bottles that had been placed mouth-to-mouth. **(g)** Explain the differences in the observations for the bottles tested with a candle. **(h)** Explain the differences in the bottles tested with hot steel wool. **(i)** Write a balanced equation for the reaction of iron with oxygen to produce iron (II) oxide. **(j)** Write a balanced equation for the reaction of iron with oxygen to produce iron (III) oxide. *custom page 46*
Transcribed Image Text:**Experiment 4: Preparation and Properties of Hydrogen and Oxygen Gases** **(c)** Results of all glowing splint tests involving the two bottles of air and the third bottle of oxygen. **(d)** Results of the tests with the candle, the fourth bottle of oxygen and a bottle of air. **(e)** Results of the test with hot steel wool, the fifth bottle of oxygen and a bottle of air. **(f)** Explain the similarities and differences in the glowing splint tests for the second bottle of oxygen, the bottle of air and the two bottles that had been placed mouth-to-mouth. **(g)** Explain the differences in the observations for the bottles tested with a candle. **(h)** Explain the differences in the bottles tested with hot steel wool. **(i)** Write a balanced equation for the reaction of iron with oxygen to produce iron (II) oxide. **(j)** Write a balanced equation for the reaction of iron with oxygen to produce iron (III) oxide. *custom page 46*
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