Colors Flashcards by Fatima N

Q

Cobalt + NH3

A

Pink solution to blue ppt

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Q

Cobalt + NaOH

A

Pink solution to blue ppt

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Q

Cobalt + excess nh3

A

Blue ppt to pale yellow solution

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Q

Iron (II) + NaOH

A

Pale green sol to green ppt

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Q

Iron (II) + NH3

A

Pale green solution to green ppt

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Q

Iron (III) + NaOH

A

Yellow brown solution to brown ppt

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Q

Iron (III) + NH3

A

Yellow brown solution to brown ppt

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Q

Chromium + NaOH

A

green solution to green ppt

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Q

Chromium + excess NaOH

A

Green ppt to green solution

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Q

Chromium + NH3

A

Green solution to green ppt

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Q

Chromium + excess NH 3

A

Green ppt to purple solution

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Q

Manganese + Na OH

A

pale pink solution to pale brown ppt

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Q

Manganese + NH 3

A

Pale pink solution to pale brown ppt

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Q

Nickel + Na OH

A

Green solution to green ppt

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Q

Nicker + NH 3

A

Green solution to green ppt

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Q

Nickel + excess NH 3

A

Green ppt to deep blue solution

Q

Copper + Na OH

A

Pale blue solution to blue ppt

Q

Copper + NH 3

A

Pale blue solution to blue ppt

Q

Copper + excess NH 3

A

Blue ppt to darker blue solution

Q

Color of CrO4

A

Yellow

Q

Color of Cr2o7

A

Orange

Q

Color of chromium (ll)

A

Blue

Q

Color of chromium (iii)

A

Green

Q

Cobalt + HCL produces what? (Color change?)

A

CoCl4 and color change from pink solution to blue ppt

What is produced when copper reacts w/ concentrated HCL? ( color change?)

CuCl4 forms. Blue to green to yellow