Flame tests + photometry Flashcards
1
Q
Explain the method for flame tests
A
1)light bunsen burner, hot blue flame
2)pick up sample of test substance with platinum wipe loop cleaned in HCL
3)Hold close to flame
1
Q
What is a flame test
A
identifys metal ions
2
Q
What colour does lithium turn
A
red
3
Q
What colour does sodium turn
A
yellow
4
Q
What colour does pottasium turn
A
lilac
5
Q
What colour does calcium turn
A
orange-red
6
Q
What colour does copper turn
A
blue-green
7
Q
Why is flame photometry better
A
sensitivity, accuracy, speed
8
Q
What does intensity indicate
A
concentration of that ion in solution
9
Q
How can you find the cons from intensity
A
calibration curve
