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When an alkali metal salt drawn into a non-luminous flame will ionise, absorb energy from the flame and then emit light of a characteristic wavelength as the excited atoms decay to the unexcited ground state.
So,the intensity of emission is proportional to the concentration of the element in the solution.
A photocell detects the emitted light and converts it to a voltage, which can be
recorded.
By this we can estimate the conc of Na.
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∙ 13y ago
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Which elements may be excited using a Bunsen burner flame?
sodium
What color does sodium nitrate burn?
In a flame test , the sodium ion will produce a bright yellow flame. The nitrate ion does not produce a colour. Dissolve sodium nitrate in water. Then using a ni-chrome wire, clean it in hydrochloric acid, dip the clean wire intoi the solution. Then pass the wire through a bunsen flame. The pale blue flame, will become bright yellow. Different metal ions produce different flame colours. Lithium = red Potassium = lilac Copper = Blue/green
Why do you use the blue flame while using a Bunsen burner?
hottest part of flame
What is flame photometry?
flame photometry involves the determination of concentration of alkali and alkaline earth metals present in a sample based on the radiation emitted by it when the sample is atomized to a flame
When using butane to inflate a tire with a flame why does the tire shrink?
the tire cooling down inside after the flame and explosion.
Can you determine lithium and calcium using photoelectric flame photometer?
Yes, it is possible.
Why is it difficult to identify potassium ions and sodium ions in low sodium salt using a flame test?
When sodium is subjected to a flame test, it burns a bright yellow. This yellow flame can be brighter than the lilac flame color of the potassium, which makes it more difficult to distinguish between the sodium and potassium.
Which elements may be excited using a Bunsen burner flame?
sodium
Sentence using affinity?
Sodium, when exposed to air has a great affinity for oxygen, such that it bursts into flame
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.
How would you measure the brightness of light being reflected by an object?
by using a photometer
Test for sodium chloride?
If you have the solid of whatever your testing and you burn it (flame test) it will burn with an orange flame if sodium is present. To establish whether it is sodium CHLORIDE, ad a solution of what your testing to silver nitrate and it should form a white precipitate if it's sodium chloride.
What color does sodium nitrate burn?
In a flame test , the sodium ion will produce a bright yellow flame. The nitrate ion does not produce a colour. Dissolve sodium nitrate in water. Then using a ni-chrome wire, clean it in hydrochloric acid, dip the clean wire intoi the solution. Then pass the wire through a bunsen flame. The pale blue flame, will become bright yellow. Different metal ions produce different flame colours. Lithium = red Potassium = lilac Copper = Blue/green
What is 46.693 divided by 4.7 using estimation?
9.9347
How could estimation be helpful?
Estimation enables you to obtain a rough answer using only mental maths. An approximate answer can sometimes be sufficient.
What is the method of estimation using a representative section of a whole?
sampling
What is a method of estimation using a representative section of the whole?
sampling
