Carbonate, Bicarbonate Flashcards
1
Q
Properties of CO2
A
Acidic, Released with Brisk effervescence, colourless, odourless, gaseous oxide
2
Q
Identification of CO2
A
Lime water test
at first, white turbidity = CaCO3
excess of CO2, water soluble = Ca(HCO3)2
3
Q
Is lime water test possible for SO2?
A
Yes
CaSO3 = white
Ca(HSO3)2 = soluble
4
Q
What is lime water?
A
Ca(OH)2
5
Q
What can be used in place of lime water?
A
Ba(OH)2 = Baryta water
6
Q
Why does carbonate form ppt with CaCl2 and turbidity with Ca(OH)2
A
In CaCl2, Ca2+ is more, ppt more
In Ca(OH)2, Ca2+ conc is less, ppt less = tubidity
7
Q
Carbonate
Reaction with BaCl2
A
BaCO3 (white)
8
Q
Carbonate
Reaction with Pb(NO3)2
A
PbCO3 (white)
9
Q
Carbonate
Reaction with AgNO3
A
Ag2CO3 (Yellowish white)
10
Q
Carbonate
Reaction with H2(NO3)2
A
Hg2CO3
11
Q
Carbonate
Reaction with HgCl2
A
HgCO3.3HgO (Reddish Brown)
12
Q
A
13
Q
A
