Ncert

Question 1

Pbcl2 dil hcl
Pbcl2 cl- excess pbcl4-2 soluble
Heating pbcl2 soluble
Kcl h2s pbcl2 PBS red h2s excess PBS black

Question 2

Zn+2 [ k4 fe(cn)6] further

Answer 2

K2zn3 [Fe(cn)6]2 further reach wont white

Question 3

Mn+2 Na3BiO3

Answer 3

Bi+3 + Mno4- purple

Question 4

Ni+2 Naoh citrate or tartrate

Answer 4

Precipitation won’t take place

Question 5

Co+2 Kno2

Answer 5

K3[co(h2o)]6 yellow

Question 6

Cr+3 na2co3

Answer 6

Cr(oh)3 precipitate

Question 7

Al+3 nh3 /nh4oh excess nh3

Answer 7

Aloh3 white
No rxn

Question 8

Fe cold dil hno3

Answer 8

Fe(no3)2 +nh4+

Question 9

Cu+2 naoh
heating

Answer 9

Cu(oh2) blue precipitate
Cuo black

Question 10

Bi+3 black conc hno3 / heating
Dil hno3/ heating

Answer 10

Bi2s3 black
H2s bicl3
S bi(no3)3

Question 11

Hg+2 dil h2s
Na2s aqua regia

Answer 11

Hgs black
Hgs2-2 soluble
Aqua regia hgcl2 soluble +s white hno3 so4-2 ppt dissappear

Question 12

Ag+ Na2hpo4

Answer 12

Ag3po4 yellow

Question 13

Hg+2 2 Sn+2

Answer 13

Sn+4 hg black precipitate

Question 14

Pb+2 h2s gives PBS
1)conc hno3
2) dil hno3

Answer 14

Pb(no3)2+s precipitate heating gives so4-2 +pb+2 gives pbso4 white
Pbno3 h2s gives s presp

Question 15

Pb kI gives PbI2 colour prespitate
1) heating on slow cooling at room temperature
2) Ki

Answer 15

Colorless soluble needle shaped crystals pbI2 yellow
Yellow1
Pbi4-2 soluble

Question 16

Pb+2
NH3 NH4OH
Nh3
H2s

Answer 16

PB(OH)2 PRESP
NH3 NO
PBS PRESP

Question 17

Pb
NAOH
OH-
H2O2
S2O3-2

Answer 17

PB(OH)2 WHITE
pB(OH)4-2
PBO2 BLACK PRESPITATE
PBO2 PRESPITATE BLACK

Question 18

Pb+2 K2CRO7
OH- BASIC
ACIDIC H+

Answer 18

PbCRO4 PRECIPIATE YELLOW
PB(OH)4]-2
PB+2 +CR2O7-2 SOLUBLE

Question 19

PB+2 KCN

Answer 19

Pb(cn)2 presp white

Question 20

Pb+2 na2co3
Heating
Gaseous product is precipitate vice versa for all cards

Answer 20

Pbco3 white + pb(oh)2 prsepitate
Pbo gaseous product yellow co2 prespiate

Question 21

Pb+2 Na2so3
H+

Answer 21

Pbso3 white+
Pb+2 so2 gaseous product

Question 22

Pb+2 Na2HpO4

Answer 22

Pb3(po4)2 precipitate white

Question 23

Hg 2 +2 cu

Answer 23

Cu+2 Hg precipitate