Other Chemical Tests Flashcards
What is the test for H2 gas?
Apply a lit splint
What is the result of the test for H2 gas?
A squeaky ‘pop’ occurs
What is the test for CO2 gas?
Bubble through limewater
What is the result of the test for CO2 gas?
Solution turns cloudy
What is the test for O2 gas?
Apply a glowing splint
What is the result of the test for O2 gas?
The splint will re-light
What is the test for SO4 2- ions?
Add BaCl2 solution
What is the result of the test for SO4 2- ions?
A white ppt will form
What is the test for halide ions?
Add HNO3 then AgNO3
What is the result of the test for halide ions?
White ppt = Cl- ions present which will dissolve in dilute ammonia Cream ppt = Br- ions present which will only dissolve in conc ammonia Yellow ppt = I- ions present which is insoluble in ammonia
What is the test for CO3 2- ions?
Add any acid
What is the result of the test for CO3 2- ions?
Effervescence (as CO2 is given off)