Halide Ions With Sulfuric Acid Flashcards

1
Q

Oxidation state of sulfur in NaHSO4

A

+6

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2
Q

Oxidation state of sulfur in SO2

A

+4

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3
Q

Oxidation state of sulfur in

s

A

0

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4
Q

Oxidation state of sulfur in H2S

A

-2

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5
Q

HCl produces

A

White misty fumes

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6
Q

Br2

A

Orange vapour

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7
Q

S

A

Yellow solid

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8
Q

H2S

A

Rotten egg smell

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9
Q

Cl- reacts with

A

NaHSO4

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10
Q

Br- reacts with

A

NaHSO4 SO2

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11
Q

I- reacts with

A

NaHSO4, SO2, S, H2S

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12
Q

Test for halides using silver nitrate

A

Add dilute Nitric acid and then silver nitrate solution.

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13
Q

White precipitate

A

Chloride ions (silver chloride)

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14
Q

Cream preciptate

A

Bromide ions (silver bromide)

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15
Q

Yellow precipitate

A

Iodide ions ( silver iodide)

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16
Q

We add nitric acid to….

A

React with any anions other than halides

This could give a false positive

17
Q

Further tests after silver nitrate

A

Add amonia

18
Q

Cl-

A

white precipitate dissolves in

dilute NH3

19
Q

Br-

A

cream precipitate dissolves in

concentrated NH3

20
Q

I-

A

yellow precipitate insoluble in

concentrated NH3