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...
Related questions
Question
![1. Flame Test
Metal
Barium chloride
Calcium chloride
Copper (II) sulfate
Potassium chloride
Sodium chloride
2. Test for Cu+2, Fe+³, Pb+2, Zn +2
Solution
Cu2 in Copper (II) sulfate
Fe3 in Iron (III) chloride
Zn2 in Zinc sulfate
Fe2 in Iron (II) sulfate
Pb+2 in Lead nitrate
Reaction with Sodium
Hydroxide
Color Flame
Reaction with Ammonia](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2de2dbdb-2705-4f44-ae88-74ab6f1079f2%2F99589ad2-f990-4e5f-90b7-02ca41de5fa8%2Fi14zebo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Flame Test
Metal
Barium chloride
Calcium chloride
Copper (II) sulfate
Potassium chloride
Sodium chloride
2. Test for Cu+2, Fe+³, Pb+2, Zn +2
Solution
Cu2 in Copper (II) sulfate
Fe3 in Iron (III) chloride
Zn2 in Zinc sulfate
Fe2 in Iron (II) sulfate
Pb+2 in Lead nitrate
Reaction with Sodium
Hydroxide
Color Flame
Reaction with Ammonia
![1. Flame Test
a. Put 1 tsp of barium chloride in a clear dry watch glass. Gently add 2 to 3
drops of concentrated hydrochloric acid.
b.
Heat a piece of nichrome wire over an alcohol lamp until the flame is no
longer colored.
c. Dip the nichrome wire in the mixture containing barium chloride.
d.
Hold the wire at the edge of the flame.
e.
Record the color emitted after a few minutes.
f. Clean the nichrome wire, repeat steps a-e, using calcium chloride, copper (II)
sulfate, potassium chloride, and sodium chloride, respectively.
2. Test for Cu+2, Fe +3, Pb+2, Zn +2
a. Place 2 mL solution of copper (II) sulfate, iron (III) chloride, lead nitrate, zinc
sulfate, and iron (II) sulfate in separate test tubes.
b. Add 4 to 5 drops sodium hydroxide solution to each solution. Observe.
c. Repeat step a.
d. Add 4 to 5 drops ammonia solution to each solution. Observe.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2de2dbdb-2705-4f44-ae88-74ab6f1079f2%2F99589ad2-f990-4e5f-90b7-02ca41de5fa8%2Fczhvgsgj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Flame Test
a. Put 1 tsp of barium chloride in a clear dry watch glass. Gently add 2 to 3
drops of concentrated hydrochloric acid.
b.
Heat a piece of nichrome wire over an alcohol lamp until the flame is no
longer colored.
c. Dip the nichrome wire in the mixture containing barium chloride.
d.
Hold the wire at the edge of the flame.
e.
Record the color emitted after a few minutes.
f. Clean the nichrome wire, repeat steps a-e, using calcium chloride, copper (II)
sulfate, potassium chloride, and sodium chloride, respectively.
2. Test for Cu+2, Fe +3, Pb+2, Zn +2
a. Place 2 mL solution of copper (II) sulfate, iron (III) chloride, lead nitrate, zinc
sulfate, and iron (II) sulfate in separate test tubes.
b. Add 4 to 5 drops sodium hydroxide solution to each solution. Observe.
c. Repeat step a.
d. Add 4 to 5 drops ammonia solution to each solution. Observe.
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