Exp. 6 - Ammonium Sulfide group Flashcards by mi rodriguez | Brainscape

Q

Al 3+ and excess NH4OH

A

insoluble

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Q

Al(OH )3

A

white gelatinous ppt

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Q

Al and excess NaOH

A

colorless solution

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Q

Al and Na2O2

= Na3AlO

A

Colorless solution

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Q

Al4[Fe(CN)6]3

A

white ppt

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Q

Cr(OH )3

A

grayish green

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Q

Cr in excess ammonium hydroxide

A

insoluble

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Q

NaCr02; Cr 3+ in excess NaOH

A

green solution

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Q

Na2CrO4

A

yellow solution

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Q

Cr4[Fe(CN)6]3

A

grayish green ppt

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Q

Zn(OH)2

A

white ppt

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Q

Zn ans excess NH4OH

A

Zn(NH3)4 2+

colorless solution

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Q

ZnS

A

white ppt

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Q

Na2ZnO2

A

colorless solution

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Q

Zn in Na2O2

A

no ppt

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Q

Zn2Fe(CN)6

A

white ppt

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Q

Zn3[Fe(CN)6]2

A

yellowish white ppt

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Q

Fe(OH)2

A

white-green-brown ppt.

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Q

Fe 2+ in NH4OH

A

Fe(OH)2

insoluble

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Q

FeS

A

black ppt

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Q

fe 2+ in dilute HCL ; HNO3

A

soluble

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Q

Fe 2+ in NaOH

A

Fe(OH)2

white-green-reddish brown ppt

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Q

Fe 2+ in excess NaOH

A

insoluble

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Q

Fe(OH)3 from Na2O2

A

reddsih brown ppt

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Q

F2Fe(CN)6

A

white to blue ppt

Q

Fe3[Fe(CN)6]2

A

turnbull’s blue ppt

Q

K3Co(NO2)6

A

yellow crystalline ppt

Q

Fe(OH)3

A

reddish brown ppt

Q

Fe2S3

A

black ppt

Q

Fe 3+ and Na2O2

A

not affected

Q

Fe4[Fe(CN)6]3

A

prussian blue ppt

Q

Fe 3+ in H2C2O4

A

soluble

Q

Fe(CN)3

A

brown solution

Q

Fe(SCN) 2+

A

blood red solution

Q

Fe 3+ in acetate and KNO2

A

no ppt.

Q

Co(OH)NO3

A

blue basic salt

Q

Co(NH3)4 2+

A

dirty yellow solution (turns red)

Q

CoS

A

black ppt

Q

Co(OH)3 to Co(OH)2

A

blue to pink ppt

Q

Co(OH)3 oxidized

A

black ppt

Q

Co2Fe(CN)6

A

green ppt

Q

Co3Fe(CN)6

A

reddish brown ppt

Q

Co(SCN)4 2-

A

deep blue solution

Q

Ni(OH)NO3

A

green basic salt

Q

Ni(NH3)4

A

blue solution

Q

NiS

A

black ppt

Q

Ni(OH)2

A

green apple ppt

Q

Ni2Fe(CN)6

A

greenish white ppt

Q

Mn(OH)2 to MnO •H2O

A

white to light brown ppt

Q

MnS

A

flesh to brown ppt

Q

Mn(OH)2 to Mno • H2O

A

white ppt to light brown ppt

Q

MnO2 • H2O from Na2O2

A

dark brown ppt

Q

Mn2Fe(CN)6

A

pinkish white ppt

Q

Cr3[Fe(CN)6]2

A

light brown ppt

Q

not affected by Na2O2

A

Fe 3+ , Ni 2+

Q

Soluble in Na2O2

A

Al 3+, Cr 3+ , Zn 2+

Q

Zn in excess NH4OH

A

soluble

colorless solution

Q

Co in excess NH4OH

A

soluble

dirty yellow solution

Q

Ni in excess NH4OH

A

soluble

blue solution

Q

No ppt or soluble in NH4Cl & NH4OH

A

Zn 2+ ,Fe 2+ , Co 2+

,Ni 2+ , Mn 2+

Q

Fe 2+ in NH4SCN

A

no reaction

Q

Al 3+ & NH4OH = Al(OH)3

A

white gelatinous ppt.