salts Flashcards
which chlorides are insoluble
silver, lead,
which sulfates are insoluble
lead barium and calcium
are common carbonates and hydroxides soluble or insoluble
insoluble except sodium potassium and ammonium
what colour is the calcium ion precipitate once reacted with NAOH
white
what colour is the copper ion precipitate once reacted with NAOH
blue
which ion, once reacted with NAOH, produces a green precipitate?
iron 2+
what colour is the copper 3+ precipitate once reacted with NAOH
brown
how do you test for ammonium ions?
add NAOH, ammonia gas will turn damp red litmus paper blue.
what colour is the silver bromide precipitate?
cream
how do you test for sulfate ions?
add dilute HCl
add barium chloride solution
white precipitate forms
why do you add HCl in the sulfate test
stops other precipitation reactions occurring not involving sulfate ions
