Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
qualitative Analysis
|
process of separating and identifying ions based on unique physical and chemical properties
|
|
|
silver group (group 1)
|
Ag+ Pb++ Hg2++
|
|
|
silver group reagent
|
HCl
|
|
|
Copper-Arsenic (group 2)
|
Cu++ Cd++ Hg++ As+++ Bi+++ Sb+++ Sn++++
|
|
|
Copper-arsenic group reagent
|
H2S
|
|
|
Aluminum-Nickel Group (group 3)
|
Al+++ Fe+++ Cr+++ Ni++ Zn++ Fe++ Co++ Mn++
|
|
|
Aluminum-Nickel Group reagent
|
NH4OH or (NH4)2S
|
|
|
Barium-Magnesium Group (group 4)
|
Ba++ Mg++ Ca++ Na+ K+ NH4+
|
|
|
Barium-Magnesium Group reagent
|
none
|
|
|
complete precipitation
|
add one more drop of reagent and stir it to make sure everything precipitates that needs to
|
|
|
centrifuge
|
having everything move so fast so that denser substance goes to the bottom
|
|
|
supernatant
|
liquid in the test tube
|
|
|
precipitate
|
solid in the bottom of the test tube
|
|
|
white precipitate
|
presence of silver group
|
|
|
errors
|
add too much water you will lose the PbCl2 and if you add too much HCl you will loose the Ag+ ion
|
|
|
yellow
|
presence of Pb++
|
|
|
gray
|
presence of Hg2++
|
