-> er wire added to HCI No reaction observed Inactive metal. hood 6 M HNO3 was added to a piece of copper wire. ed, And the color of the solution became. ion, thus,Cu was to Cu*. The re d because NO2 gas is aq) → oxalate was reacted with KMNO4, the color of the solt to due to the rong. agent in acidic media, so provide an media for the reaction. n in acidic media : 2 MnO, + 16 H* + 5 C20, → TH

Chemistry
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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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Results & Discussion:
Part 1: Oxidation-Reduction Reactions
No. Reaction
Observation
Gas evolved (H2)
No reaction
Brown gas evolved solution turned blue
1 Zn piece +2 mL HCI (2M)
2 Cu wire + 2 mL HCI (2M)
3 Cu wire + 1 mL HNO3 (6M) // in FUME HOOD
4 1 mL NazC204 + 10 drops H;SO4 + 10 drops KMnO. Reduced to Mn2+ purple color
changes to colorless
1. When a small piece of zinc added to HCI, hydrogen
gas was produced, and the
zinc was
to
Zn (s) + HCI (aq) →
2. When a copper wire added to HCI No reaction
observed, because copper
considered as
Inactive
metal.
3. Then, in fume hood 6 M HNO3 was added to a piece of copper wire.
gas was formed, And the color of the solution became
which indicates the
presence of
ion, thus,Cu was
to Cu2. The reaction was done in
the fume hood because NO2 gas is
Cu (s) + HNO3 (aq) →
4. When sodium oxalate was reacted with KMNO4, the color of the solution was changed
from
to
due to the
of MnOa to
KMNO4 act as a strong
agent in acidic media, so
was added
to the test tube to provide an
media for the reaction.
Balanced equation in acidic media : 2 MnO, + 16 H* + 5 C20. → THIS EQUATION NOT REQUIRED
Transcribed Image Text:Results & Discussion: Part 1: Oxidation-Reduction Reactions No. Reaction Observation Gas evolved (H2) No reaction Brown gas evolved solution turned blue 1 Zn piece +2 mL HCI (2M) 2 Cu wire + 2 mL HCI (2M) 3 Cu wire + 1 mL HNO3 (6M) // in FUME HOOD 4 1 mL NazC204 + 10 drops H;SO4 + 10 drops KMnO. Reduced to Mn2+ purple color changes to colorless 1. When a small piece of zinc added to HCI, hydrogen gas was produced, and the zinc was to Zn (s) + HCI (aq) → 2. When a copper wire added to HCI No reaction observed, because copper considered as Inactive metal. 3. Then, in fume hood 6 M HNO3 was added to a piece of copper wire. gas was formed, And the color of the solution became which indicates the presence of ion, thus,Cu was to Cu2. The reaction was done in the fume hood because NO2 gas is Cu (s) + HNO3 (aq) → 4. When sodium oxalate was reacted with KMNO4, the color of the solution was changed from to due to the of MnOa to KMNO4 act as a strong agent in acidic media, so was added to the test tube to provide an media for the reaction. Balanced equation in acidic media : 2 MnO, + 16 H* + 5 C20. → THIS EQUATION NOT REQUIRED
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