What color do lithium ions produce under a flame?
Crimson
What color do sodium ions produce under a flame?
Yellow
What color do potassium ions produce under a flame?
Lilac
What color do calcium ions produce under a flame?
Orange-red
What color do copper ions produce under a flame?
Green flame
Why can a flame test not be used for a sample containing a mixture of metal ions?
There will be more than one flame color mixing meaning the colors may be masked
What ions form white compound when reacted with a sodium hydroxide solution?
Aluminum, calcium, magnesium
What is the color of the compound produced when copper ions and added to sodium hydroxide?
Blue
What is the color of the compound produced when iron (2+) ions and added to sodium hydroxide?
Green
What is the color of the compound produced when iron (3+) ions and added to sodium hydroxide?
Brown
What is the test for carbonates?
- add to an acid
- run the gas produced through lime water
- if a carbonate is present the lime water will turn cloudy (due to CO2)
what is the test for halides?
Add silver nitrate solution in the present of dilute nitric acid.
What color is silver chloride?
White
What color is silver bromide?
Cream
What color is silver iodide?
Yellow
What is the test for sulfates?
- add to barium chloride in the presence of HCl
- a white precipitate will be produced
Explain how to do flame test emissions spectroscopy.
- the sample is put into a flame
- the light produced is passed through a spectroscope
- a line spectrum is produced that can be analyzed
