REACTION OF CATIONS WITH H2S

Question 1

Ion: Silver Cation (Ag+)

Product: Silver hydroxide to A2O

Visible Result:

A. White gelatinous ppt
B. White ppt
C. White to brown ppt

Answer 1

C. White to brown ppt

Question 2

Ion: Lead (Pb)

Product: Lead (ll) hydroxide

Visible result:

A. White ppt
B. White amorphous ppt
C. White gelatinous ppt

Answer 2

B. White amorphous ppt

Question 3

Ion: Mercury (Hg)

Product: Mercury (Hg) + Mercury Oxide (HgO)

Visible result:

A. Yellow ppt
B. Brown ppt
C. Black ppt

Answer 3

C. Black ppt

Question 4

Ion: Aluminum (Al)

Product: Aluminum Hydroxide (Al(OH)3)

Visible Result:

A. Black ppt
B. White gelatinous ppt
C. Orange to reddish orange ppt

Answer 4

B. White gelatinous ppt

Question 5

Ion: Chromium (Cr)

Product: Chromium Hydroxide (Cr(OH)3)

Visible result:

A. Brownish black
B. Yellow ppt
C. Grayish green ppt

Answer 5

C. Grayish green ppt

Question 6

Ion: Zinc (Zn)

Product: Zinc Hydroxide (Zn(OH)2)

Visible result:

A. White ppt
B. White to black ppt
C. White gelatinous ppt

Answer 6

A. White ppt

Question 7

Ion: Manganese (Mn)

Product: Manganese (ll) Hydroxide (Mn(OH)2)

Visible result:

A. Blue ppt
B. Reddish to brown
C. White ppt

Answer 7

C. White ppt

Question 8

Ion: Ferric ion (Fe+3)

Product: Ferric Oxyhydroxide (Fe(OH)3)

Visible result:

A. Black ppt
B. Reddish brown ppt
C. Yellow ppt

Answer 8

B. Reddish brown ppt

Question 9

Ion: Ferrous Ion (Fe+2)

Product: Iron Hydroxide (Fe(OH)2)

Visible result:

A. White gelatinous ppt
B. White amorphous
C. White to green to brown ppt

Answer 9

C. White to green to brown ppt

Question 10

Ion: Cobalt (Co+2)

Product: Cobalt (ll) Hydroxide (Co(OH)2)

Visible result:

A. Blue ppt
B. Yellow ppt
C. Green ppt

Answer 10

A. Blue ppt

Question 11

Ion: Lead (ll) ion (Pb+2)

Product: Lead (ll) sulfide (PbS)

Visible result:

A. White to black ppt
B. Black ppt
C. Brownish black brown

Answer 11

B. Black ppt

Question 12

Ion: Bismuth Cation (Bi+3)

Product: Bismuth Sulfide (Bi2S3)

Visible result:

A. White ppt
B. White to brown ppt
C. Dark brown or brownish black ppt

Answer 12

C. Dark brown or brownish black ppt

Question 13

Ion: Copper(ll) cupric (Cu+2)

Product: Copper Sulfide (CuS)

Visible result:

A. Grayish green ppt
B. Blue ppt
C. Black ppt

Answer 13

C. Black ppt

Question 14

Ion: Cadmium Cation (Cd+3)

Product: Cadmium Sulfide (CdS)

Visible result:

A. Yellow ppt
B. Orange to reddish orange ppt
C. Brown ppt

Answer 14

A. Yellow ppt

Question 15

Ion: Mercury (ll) ion (Hg+2)

Product: Mercury (ll) Sulfide (HgS)

Visible result:

A. White gelatinous ppt
B. White to black ppt
C. White to green to brown

Answer 15

B. White to black ppt

Question 16

Ion: Antimony (Sb)

Product: Antimony trisulfide (Sb2S3)

Visible result:

A. Orange to reddish orange ppt
B. White to brown ppt
C. Reddish brown ppt

Answer 16

A. Orange to reddish orange ppt

Question 17

Ion: Arsenic (As)

Product: Arsenic trisulfide (As2S3)

Visible result:

A. Black ppt
B. Blue ppt
C. Yellow ppt

Answer 17

C. Yellow ppt

Question 18

Ion: Tin (Sn)

Product: Tin (ll) Sulfide (SnS)

Visible result:

A. Brown ppt
B. White ppt
C. Black ppt

Answer 18

A. Brown ppt