chapter 11 : qualitative analysis 2 Flashcards

1
Q

what is the test for oxygen?

A

hold a glowing splint in gas

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2
Q

what is the test for chlorine?

A

hold damp litmus paper in gas

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3
Q

what is the test for ammonia?

A

hold damp red litmus paper in gas

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4
Q

what is the test for hydrogen?

A

hold a lighted splint in gas

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5
Q

what is the test for sulfur dioxide?

A

bubble gas through acidified aqueous potassium manganate (VII) or bubble the gas through acidified potassium dichromate (VI) solution

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6
Q

what is the test for carbon dioxide?

A

bubble gas through limewater

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7
Q

what is positive test result for hydrogen?

A

hydrogen ignites with a squeaky ‘pop’ sound with a lighted splint

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8
Q

what is the positive test result for oxygen?

A

oxygen relights a glowing splint

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9
Q

what is the positive test result for sulfur dioxide?

A

in acidified potassium manganate (VII) solution, purple colour decolorized.
in acidified potassium dichromate (VI) solution, orange solution change to green solution.

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10
Q

what is the positive test result for chlorine?

A

chlorine bleaches damp blue litmus paper to white or paper is bleached white

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11
Q

what is positive result for ammonia?

A

paper turns blue

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12
Q

what is positive result for carbon dioxide?

A

limewater turns milky or cloudy white emulsion

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