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England113
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The presence of some halide ions in solution can be detected using aqueous silver nitrate and aqueous ammonia.

Identify a halide ions which,on addition of aqueous silver nitrate, forms a precipitate that is insoluble in concentrated aqueous ammonia.


Identify a halide ions which cannot be detected using these reagents.
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England113
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A mixture of two precipitates P and Q was formed by adding aqueous silver nitrate to a solution containing two different halide ions. Precipitate P dissolved on addition of an excess of dilute aqueous ammonia. The remaining precipitate, Q was filtered off.


Identify the halide ions in P


Precipitate Q was soluble in concentrated aqueous ammonia. Identify the halide ions in Q.
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charco
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(Original post by England113)
A mixture of two precipitates P and Q was formed by adding aqueous silver nitrate to a solution containing two different halide ions. Precipitate P dissolved on addition of an excess of dilute aqueous ammonia. The remaining precipitate, Q was filtered off.


Identify the halide ions in P


Precipitate Q was soluble in concentrated aqueous ammonia. Identify the halide ions in Q.
You know that the precipitate is a silver halide. It is now a matter of finding the solubility of silver halides in ammonia solutions. You can easily look this up.
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England113
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A mixture of two precipitates P and Q was formed by adding aqueous silver nitrate to a solution containing two different halide ions. Precipitate P dissolved on addition of an excess of dilute aqueous ammonia. The remaining precipitate, Q was filtered off.


Identify the halide ions in P


Precipitate Q was soluble in concentrated aqueous ammonia. Identify the halide ions in Q.
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k.lina
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(Original post by England113)
The presence of some halide ions in solution can be detected using aqueous silver nitrate and aqueous ammonia.

Identify a halide ions which,on addition of aqueous silver nitrate, forms a precipitate that is insoluble in concentrated aqueous ammonia.


Identify a halide ions which cannot be detected using these reagents.

Reactions with silver nitrate:
fluoride ion does not react
chloride ion forms white ppt
bromide ion forms cream ppt
iodide ion forms yellow ppt

When ammonia is added:
chloride (AgCl) ppt dissolves in dilute ammonia
bromide (AgBr) ppt dissolves in concentrated ammonia
iodide (AgI) ppt does not dissolve

Iodide ion forms a yellow ppt but it does not dissolve when concentrated ammonia is added.

Fluoride ions cannot be detected using these reagents because fluoride does not form ppt when silver nitrate is added.
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alow
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(Original post by England113)
A mixture of two precipitates P and Q was formed by adding aqueous silver nitrate to a solution containing two different halide ions. Precipitate P dissolved on addition of an excess of dilute aqueous ammonia. The remaining precipitate, Q was filtered off.


Identify the halide ions in P


Precipitate Q was soluble in concentrated aqueous ammonia. Identify the halide ions in Q.
Do some work yourself first. People won't do all of your work for you.
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England113
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(Original post by k.lina)
Reactions with silver nitrate:
fluoride ion does not react
chloride ion forms white ppt
bromide ion forms cream ppt
iodide ion forms yellow ppt

When ammonia is added:
chloride (AgCl) ppt dissolves in dilute ammonia
bromide (AgBr) ppt dissolves in concentrated ammonia
iodide (AgI) ppt does not dissolve

Iodide ion forms a yellow ppt but it does not dissolve when concentrated ammonia is added.

Fluoride ions cannot be detected using these reagents because fluoride does not form ppt when silver nitrate is added.
Is the first bit silver iodide
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England113
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(Original post by alow)
Do some work yourself first. People won't do all of your work for you.

Silver iodide. Then what's next
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