5. Heating Test (gas test) For this part, you are required to heat only one of the solids and record your observations. Thes olids to be tested are: 1. Potassium carbonate (write the equation for the reaction) solid Cu2+ Test nitric acid Insoluble Greenish blue Test water Test w/ NaOH Blue ppt Excess No change in Test w/ HCI No change Greenish blue In color color No change No change A13+ Colorless Insoluble(no change) Insoluble visible No change No change Insoluble Yellow Fe2+ Insoluble Pale yeilow Green ppt Ppt remains Musty green Reddish brown ppt No changes No changes No changes in water Yellow solution Soluble Reddish brown Fe3+ Soluble Reddish brown Yellow Effervescence is produced No change Effervescence produced No change K+ Soluble Cloudy solution Insoluble Pale green Pale blue ppt No changes Ni2+ Insoluble Pale green No change Insoluble Colorless No change 6. Identifying the cation and anion in the unknown substance above. Milky white White ppt Unknown X Colorless No changes Insoluble Colorless Use the information you have gathered in the previous tests and literature to identify the cation and anion in the unknown substance provided. Justify and validate your answers using the evidence from the literature, observations and equations.
5. Heating Test (gas test) For this part, you are required to heat only one of the solids and record your observations. Thes olids to be tested are: 1. Potassium carbonate (write the equation for the reaction) solid Cu2+ Test nitric acid Insoluble Greenish blue Test water Test w/ NaOH Blue ppt Excess No change in Test w/ HCI No change Greenish blue In color color No change No change A13+ Colorless Insoluble(no change) Insoluble visible No change No change Insoluble Yellow Fe2+ Insoluble Pale yeilow Green ppt Ppt remains Musty green Reddish brown ppt No changes No changes No changes in water Yellow solution Soluble Reddish brown Fe3+ Soluble Reddish brown Yellow Effervescence is produced No change Effervescence produced No change K+ Soluble Cloudy solution Insoluble Pale green Pale blue ppt No changes Ni2+ Insoluble Pale green No change Insoluble Colorless No change 6. Identifying the cation and anion in the unknown substance above. Milky white White ppt Unknown X Colorless No changes Insoluble Colorless Use the information you have gathered in the previous tests and literature to identify the cation and anion in the unknown substance provided. Justify and validate your answers using the evidence from the literature, observations and equations.
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter11: Stoichiometry
Section: Chapter Questions
Problem 108A: Apply Students conducted a lab to investigate limiting and excess reactants. The students added...
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Transcribed Image Text:5. Heating Test (gas test)
For this part, you are required to heat only one of the solids and record your observations.
Thes olids to be tested are:
1. Potassium carbonate (write the equation for the reaction)
solid
Cu2+
Test water
Test nitric acid
Insoluble
Greenish blue
Test w/ NaOH
Blue ppt
Excess
No change in
color
Test w/ HCI
No change
Greenish blue
In color
Insoluble
visible
Colorless
Insoluble(no
change)
Insoluble
No change
No change
A13+
No change
No
change
Insoluble
Pale yeilow
Green ppt
Ppt remains
Musty green
Reddish brown
Fe2+
in
water
Yellow solution
Soluble
Reddish brown
Yellow
Fe3+
Soluble
Reddish brown
Yellow
Effervescence
is produced
ppt
No changes
No changes
No changes
No change
Effervescence
produced
No change
K+
Soluble
Cloudy
solution
Insoluble
Pale green
Insoluble
Pale green
No change
Insoluble
Colorless
No change
6. Identifying the cation and anion in the unknown substance above.
Pale blue ppt
No changes
Ni2+
Milky white
White ppt
Unknown X
Insoluble
Colorless
Colorless
No changes
Use the information you have gathered in the previous tests and literature to identify the cation and
anion in the unknown substance provided. Justify and validate your answers using the evidence
from the literature, observations and equations.
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