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10 Cards in this Set
- Front
- Back
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What colour is the precipitate, if there is one, when fluoride ions are added to silver nitrate? Is the precipitate soluble in NH3? |
No precipitate, no observable reaction. This is because silver fluoride is soluble in water. |
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What is the colour of the precipitate, if there is one when chloride ions are added to silver nitrate solution? Also is the precipitate soluble in NH3? |
White solid precipitate of AgCl is formed. Precipitate is soluble in dilute NH3. |
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What is the colour of the precipitate, if there is one when bromide ions are added to silver nitrate solution? Is the precipitate soluble in NH3? |
A cream solid precipitate of AgBr is formed. Sparingly soluble in dilute NH3 but will dissolve in conc NH3. |
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What is colour of the precipitate, if there is one when iodide ions are added to silver nitrate solution? Is the precipitate soluble in NH3? |
Yellow solid precipitate of AgI formed. Not soluble in NH3. |
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What oxidising agent is used for the oxidation of alcohols? |
Acidified Potassium dichromate (VI) |
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Is it possible to oxidise a primary alcohol, if so what does it form? |
Forms an aldehyde which can be further oxidised to a carboxylic acid. |
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Is it possible to oxidise a secondary alcohol, if so what does it form? |
Secondary alcohols are oxidised to form keytones. |
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Is it possible to oxidise a tertiary alcohol, if so what does it form? |
Can't oxidise a tertiary alcohol. |
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How can a primary and secondary alcohol be distinguished from a tertiary alcohol? |
When dichromate acts as an oxidising agent it results in the formation of green chromium (III) ions via reduction. 1° and 2° alcohols turn the solution from orange to green whereas 3° alcohols don't. |
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How can you differentiate between aldehydes and keytones? |
Either tollens or fehlings solution. Tollens: aldehydes form silver mirror, keytones don't. Fehlings: aldehydes go from blue to brick red, keytones don't. |
