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Can concentrated nitric acid be used in flame test instead of concentrated hydrochloric acid?
Wiki User
∙ 7y ago
Cleaning of the test wire (platinum or nickel-chromium alloy) may by realized with nitric acid or hydrochloric acid.
Rinsing is made with demineralized water.
Wiki User
∙ 7y ago
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How do you obtain a blue flame from a Bunsen burner?
You would have to close the collar instead of opening it. This will produce a yellow flame. But it is not suitable for heating. Only a blue flame is suitable for heating as it is much hotter than a yellow flame. M.F. - The yellow smoky flame is the lack of Oxygen (O2) mixing with the Hydrocarbon methane (CH4)
Is a flame test a good way to identify an element?
Limitations:The nichrome wire may still have impurities after cleaning in the hydrochloric acid. This may have an affect on the colour of the flame. This in turn will have an affect on the results obtained, having an affect on the whole experiment.Another limitation is that the flame already burns red/orange so this may make it a judgement call of what colour the flame is. If this judgement is incorrect the results of the experiment will be affected.The test cannot differentiate between all elements. Several metals produce the same flame colour. Some compounds do not change the colour of the flame at all.Sodium is present in most compounds and will colour the flame. Sometimes a blue glass is used to filter out the yellow of sodium.The test cannot detect low concentrations of most ions.
What is the blue flame called of a Bunsen burner?
The blue flame is called a roaring flame and the yellow flame is called the safety flame.
What is the metal mesh called that that is used to prevent glassware from cracking when heated with a Bunsen burner?
A heat diffuser is used to diminish the concentrated heat of the flame of a burner and thus prevent glass from breaking due to thermal stress.
What are the two types of flame?
Blue Flame=Can't see (hotter then yellow flame) Yellow Flame (safety flame)=visible
Why in flame tests concentrated hydrochloric acid is used to make the paste of the salt?
Hcl liberates the ions of the salt which enables it to impart colour to flame easily.
Is there a way to test to see if it is potassium nitrate or ammonium nitrate?
Flame test. Dip a piece of platinum wire into concentrated nitric acid, and then roll it in the sample. Put the wire over a Bunsen flame. If a lilac flame is observed, it is potassium nitrate.
What is the reaction between hydrochloric acid and potassium metal?
There will be an strong exothermic reaction which will flame and sputter.
Would marble chips and hydrochloric acid make a lit flame go out?
Yes, because the reaction creates carbon dioxide gas and if you pour that gas onto a flame it will make the flame go out.
How is the first flame for the Olympic torch ignited?
Using the rays from the sun, being concentrated by a large cone shaped mirror.
How do you test the copper two ions?
A Flame Test. Using a platinum or nichrome wire. Clean the wire in hydrochloric acid, Then dip the wire into a solution containing copper(II) ions. e.g. copper sulphate solution. The pass the wire through a Bunsen burner flame. The flame should burn a green/blue colour.
Why must you use hot water bath to melt the naphthalene instead of heating it directly over a flame?
Heating it on a flame will cause possibly dangerous vapour. Hot water avoids this.
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-).
What is temperature in physics?
Temperature is a measure of the concentration of thermal energy. Consider a lit match and a beaker of room temperature water. The water will have more thermal energy (due to water's high specific heat capacity) than the flame, but the thermal energy of the flame is more concentrated.
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
How do you obtain a blue flame from a Bunsen burner?
You would have to close the collar instead of opening it. This will produce a yellow flame. But it is not suitable for heating. Only a blue flame is suitable for heating as it is much hotter than a yellow flame. M.F. - The yellow smoky flame is the lack of Oxygen (O2) mixing with the Hydrocarbon methane (CH4)
Is the temperature of a luminous flame greater ot less than that of a nonluminous flame?
The yellow color in a luminous flame is basically the black-body emission from hot particles of soot in the flame. they are hot, and they glow like the filament of a light bulb. In a blue flame, there are no particles of soot to give that incandescent radiation. Instead, the main color you see is blue emission from the high-energy C2 molecule.
