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What are the top ways of identifying metal ions?
They have a positive charge. All metals form positive ions.
Does Copper Chloride produce a blue-green or Red flame?
In a flame test the copper ions in copper chloride will produce a 'blue/green' flame. To test for metal ions, the flame colour in a flame test is indicative of the metal present. Lithium = Red Sodium = Yellow Potassium = Lilac (pale purple). There are many more flame test colours.
Why is the flame test used?
To identify the presence of certain metal ions, such as sodium and caesium.
Why does a candle burn with a yellow flame?
Candle burns with a yellow flame because its an incomplete combustion. The temperature of the flame also relates to its colour and also the trace metal ions present will influence the flame colour.
Explain why you would or would not expect significant ionization in the flame?
If the test agent have free ions the ionization of the flame will be significant. When the energy reaches a point when it take more energy the flame ionization will not be significant.
Why are nitrates used as sources of the metal ions?
Nitrates are used as sources of metal ions because all metal nitrates are soluble in water. This is very useful for metals such as lead and silver whose compounds are usually insoluble.
What is the flame test for aluminum?
Aluminium ions like Magnesium ions have no colour in a flame test
What effects would you expect on the flame colors if these compounds were chlorides instead of nitrates?
The flame colors would be the same because the metal ions produced the colored flames, not the anion (NO3-).
Why HCl is used in flame test?
HCL produces the ions of the salts which are being dissolved in the acid and it dit NOT give any colour so only the metal part do it.
How can viewing flame through cobalt glass make it easier to analyze the ions being tested in a flame test?
no Yes it does; the blue cobalt glass filters out the yellow of the sodium to make the metal ion easier to see.
How do you test for potassium ions?
Flame test
How do you test for sodium ions and potassium ions when both are present?
Get a wire. Bend it into a ring and put a few crystals of your solid on it. Do a flame test using a Bunsen burner. Potassium will give a violet flame and Sodium ions will give a Yellow flame.
