test for gases Flashcards

1
Q

ammonia

A

turns moist red litmus paper blue

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2
Q

CO2

A

forms white ppt with limewater (ppt dissolves with excess CO2)

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3
Q

Cl2

A

turns moist blue litmus paper red then bleaches it

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4
Q

H2

A

extinguished lighted splint with “pop” sound

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5
Q

O2

A

relights glowing splint

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6
Q

SO2

A

turns acidified aqueous potassium manganate(VII) from purple to colourless

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