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Questions and Answers
What color does barium impart in the non-luminous flame during a flame test?
What color does barium impart in the non-luminous flame during a flame test?
- Blue
- Bright Green
- Pale/Yellow Green (correct)
- Orange Red
What should be done before conducting a flame test for the solution of Cu2+?
What should be done before conducting a flame test for the solution of Cu2+?
- Heat the solution in the reducing zone of the flame
- Keep the air hole open
- Sterilize the platinum loop in water
- Add a drop of concentrated hydrochloric acid (correct)
What is the purpose of heating the platinum loop to redness in the non-luminous Bunsen flame?
What is the purpose of heating the platinum loop to redness in the non-luminous Bunsen flame?
- To sterilize the loop (correct)
- To impart color to the flame
- To create a reducing atmosphere
- To test for boron
What color does calcium impart in the non-luminous flame during a flame test?
What color does calcium impart in the non-luminous flame during a flame test?
What happens when the air hole is closed and very little air is allowed to mix with the gas in a Bunsen burner?
What happens when the air hole is closed and very little air is allowed to mix with the gas in a Bunsen burner?
What color does boron impart in the non-luminous flame during a flame test?
What color does boron impart in the non-luminous flame during a flame test?
What should be done before conducting a flame test for the solution of Cu2+?
What should be done before conducting a flame test for the solution of Cu2+?
What is the purpose of heating the platinum loop to redness in the non-luminous Bunsen flame?
What is the purpose of heating the platinum loop to redness in the non-luminous Bunsen flame?
What happens when the air hole is closed and very little air is allowed to mix with the gas in a Bunsen burner?
What happens when the air hole is closed and very little air is allowed to mix with the gas in a Bunsen burner?
What color does arsenic impart in the non-luminous flame during a flame test?
What color does arsenic impart in the non-luminous flame during a flame test?
What color does boron impart in the non-luminous flame during a flame test?
What color does boron impart in the non-luminous flame during a flame test?
What color does copper (I) impart in the non-luminous flame during a flame test?
What color does copper (I) impart in the non-luminous flame during a flame test?
What is the purpose of heating the platinum loop to redness in the non-luminous Bunsen flame before conducting a flame test?
What is the purpose of heating the platinum loop to redness in the non-luminous Bunsen flame before conducting a flame test?
What happens when the air hole is closed and very little air is allowed to mix with the gas in a Bunsen burner?
What happens when the air hole is closed and very little air is allowed to mix with the gas in a Bunsen burner?
What should be done before conducting a flame test for the solution of Cu2+?
What should be done before conducting a flame test for the solution of Cu2+?
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