Anions (Introduction) Flashcards
Which anions are in Class A - Sub group I?
(CO3)2- , (HCO3)- , (SO3)2- , (HSO3)- , S2- , (S2O3)2- , (NO2)- , (CH3COO)-
Kanti bai shanti bai sab thailand nikle aise
dil H2SO4, dil HCl -> gives volatile product
Which anions are in Class A - Sub group II?
F- , Cl- , Br- , I- , (NO3)- , (BO3)3- , (C2O4)2-
Fir Cal Bahar Ai New Born Child
conc H2SO4 -> gives volatile product
Which anions are in Class B - Sub group I?
(SO4)2- , (PO4)3- , (CrO4)2-
ppt
Which anions are in Class B - Sub group II?
(CrO4)2- , (Cr2O7)2- , (MnO4)- , (MnO4)2-
Redox
What does this anion produce on reaction with acid?
(CO3)2-
CO2
What does this anion produce on reaction with acid?
(HCO3)-
CO2
What does this anion produce on reaction with acid?
(SO3)2-
SO2
What does this anion produce on reaction with acid?
(HSO3)-
SO2
What does this anion produce on reaction with acid?
S2-
H2S
What does this anion produce on reaction with acid?
(S2O3)2-
SO2 + Sā
What does this anion produce on reaction with acid?
(NO2)-
NO2
What does this anion produce on reaction with acid?
(CH3COO)-
CH3COOH
What does this anion produce on reaction with acid?
F-
HF
What does this anion produce on reaction with acid?
Cl-
HCl
What does this anion produce on reaction with acid?
Br-
Br2
What does this anion produce on reaction with acid?
I-
I2
What does this anion produce on reaction with acid?
(NO3)-
NO2
What does this anion produce on reaction with acid?
(BO3)3-
H3BO3
What does this anion produce on reaction with acid?
(C2O4)2-
CO + CO2
How is soda extract formed
Salt (XY) & Na2CO3 in 1:3
Boil 10-15min
Filter out XCO3
Why is soda extract prepared?
To make soluble form of insoluble salt
Why does soda extract need to be neutralised with acid?
Na2CO3 makes the aq soln basic so N.O.A. is used to neutralise the medium. Anionic part of acid must be different from anion that has to be detected. Acid cannot be O.A. warna anion ko oxidise kar dega.
