Qualitative Analysis Module 3 Test for Gases Flashcards
In Qualitative analysis we test for what?
Anions and Cations
What are the observations for hydrogen presence
Hydrogen is colourless, odourless and neutral
What is the test for hydrogen?
It outs a lit splint with a pop
What are the traits of oxygen?
Colourless, odourless and neutral
What is the test for oxygen?
Relights a glowing splint
What are the traits of carbon dioxide?
colourless, odourless and acidic
What is the test for carbon dioxide gas?
Turns blue litmus red and forms a white ppt with lime water (calcium hydroxide (aq))
What are the traits of ammonia?
Ammonia is colourless, pungent and alkaline
What test is used for ammonia?
Turns red litmus blue and forms dense white fumes with hydrogen chloride gas (HCl)
What are the traits of chlorine gas?
Pale yellow-green gas, pungent and acidic
What test is used for chlorine?
Turns red litmus blue and forms dense white fumes with HCl(g)
What are the traits of sulphur dioxide?
It is colourless, pungent gas, acidic and is a reducing gas
What is the test for sulphur dioxide?
It turns purple KmO4/H+ colourless
Turns orange K2Cr2O7/H+ green
What are the traits of nitrogen dioxide?
Brown pungent gas and is acidic.
What is the test for nitrogen dioxide?
It turns blue litmus red.
