Qualitative Analysis Reactivity Trends Flashcards

1
Q

Identifying CO3^-2

Carbonate ions

A

+ dilute HNO3
Bubbles (CO2)
Limewater - cloudy

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2
Q

Sulfate ions SO4^-2

A

+ BaCl2 (aq) / Br(NO3)2 (aq)
Aqueous barium chloride / nitrate
White ppt

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3
Q

Halide ions

-Cl, -Br , -I

A

+ AgNO3 (aq)
Aqueous silver nitrate
Ppt forms Ag+ + X- > AgX (s)

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4
Q

AgCl

A

White ppt

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5
Q

AgBr

A

Cream

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6
Q

AgI

A

Yellow

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7
Q

Order of ion tests

A

Carbonate > sulfate > halide

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8
Q

Reasons for order

A

CO3^2- form ppt in sulfate and halide tests

Sulfate produce ppt with halide test

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9
Q

Ammonium ions

NH4+

A
\+ NaOH(aq)
Warm
Test gas - red litmus paper
> blue
Ammonia gas
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