you are presented with four chemical compounds. each compound contains a different metal. when the compound…

you are presented with four chemical compounds. each compound contains a different metal. when the compound is heated in a flame a distinct color is emitted as the electrons are excited and give off different wavelengths of light. determine the unknown compound based on the data table and photo.\na barium chloride\nb calcium chloride\nc copper (ii) sulphate\nd potassium nitrate

you are presented with four chemical compounds. each compound contains a different metal. when the compound is heated in a flame a distinct color is emitted as the electrons are excited and give off different wavelengths of light. determine the unknown compound based on the data table and photo.\na barium chloride\nb calcium chloride\nc copper (ii) sulphate\nd potassium nitrate

Answer

Explanation:

Step1: Recall flame - test colors

In flame - tests, different metal ions produce characteristic colors. Copper(II) compounds typically produce a blue - green or blue color when heated in a flame. Barium produces a green color, calcium produces an orange - red color, and potassium produces a lilac color.

Step2: Match the color in the photo

The photo shows a blue/white color which is characteristic of lead compounds, but among the given options, copper(II) sulfate is the one that can produce a blue - like color in a flame test.

Answer:

C. copper (II) sulphate