metal hydroxide precipitates Flashcards
a crimson flame means a _____ ion is present
lithium
a yellow flame shows a ______ ion is present
sodium
a lilac flame shows a _____ ion is present
potassium
an orange/red flame shows a _____ ion is present
calcium
a green flame shows that a ______ ion is present
copper
if sodium hydroxide solution is added to 3 test tubes one with calcium ions, another with magnesium ions , and another with aluminium ions, what happens
a white precipitate is produced
how can we distinguish a test between 3 sodium hydroxide solution tests , each one with different metal ions
by adding excess sodium hydroxide solution, then the aluminium precipitate redissolves.
doing a flame test to figure out which is calcium
write the word equation for calcium nitrate and sodium hydroxide
calcium nitrate + sodium hydroxide —> sodium nitrate + calcium hydroxide
how can we tell that a calcium hydroxide is a participate in a word equation?
it has the state symbol for a solid
how do copper II ions react with sodium?
they form a blue participate of copper (II) hydroxide.
how does iron (II) ions react with sodium hydroxide?
it forms a green participate of iron (II) hydroxide
how do Iron (III) ions react with sodium hydroxide?
forms a brown precipitate of iron (III) hydroxide.
