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Students in chemistry class have been given the assignment to use flame test emission data to determine the identity of an
unknown substance. When the students put a sample of the unknown compound in the flame, blue and green colors were visible.
What could be one explanation for these results?
A)
The Bunsen burner must not be working properly.
B)
The unknown substance must be a sodium compound.
C)
The unknown substance contained both copper and lead.
D)
It is impossible to narrow down anything about the unknown.

Sagot :

It is impossible to narrow down anything about the unknown.

Flame tests are common analytical techniques used to determine the composition of an unknown compound based on the color that it imparts to flame. Each metal ion imparts a specific color to flame which helps us to identify it.

In this case, two colors were visible in the flame and it will be difficult to determine which of the colors corresponds to the actual metal ion present.

Therefore, it is impossible to narrow down anything about the unknown.

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