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The color given off from the potassium through the blue cobalt glass is somewhat if a lavender, lilac color.
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What is the purpose of using the cobalt glass in the observation of sodium and potassium?
It is appreciated for its attractive color and is also used as an optical filter in flame tests to filter out the yellow flame caused by the contamination of sodium, and expand the ability to see violet and blue hues, under fluorescent light, the cobalt glass has twice the effect. -http://wikipedia.com
What is the texture for cobalt?
The texture, Is like glass. Because; The pigments and color are like the blue and green cobalt plates they make.
What is Deep-blue silica glass coloured with cobalt oxide?
It's called Smalt
How was cobalt discovered?
it was discovered on the moon in 1735 by aliens
How does air help in burning?
When something burns, it needs oxygen to stay alight. There is oxygen in the air, and that lets a flame keep burning. If you were to put a glass over a flame, a candle for example, the fire would go out once it had used all of the oxygen inside and turned it into carbon dioxide.
What is the purpose of using the cobalt glass in the observation of sodium and potassium?
It is appreciated for its attractive color and is also used as an optical filter in flame tests to filter out the yellow flame caused by the contamination of sodium, and expand the ability to see violet and blue hues, under fluorescent light, the cobalt glass has twice the effect. -http://wikipedia.com
What is the colour of potassium carbonate?
In a flame test, potassium and its compounds emit a lilac color, which may be masked by the strong yellow emission of sodium if it is also present. Cobalt glass can be used to filter out the yellow sodium color. The potassium ion is colorless in water.
What color flame test does sodium give through cobalt glass?
None.
What color is potassium carbonate?
In a flame test, potassium and its compounds emit a lilac color, which may be masked by the strong yellow emission of sodium if it is also present. Cobalt glass can be used to filter out the yellow sodium color. The potassium ion is colorless in water.
Why is the sodium flame is not visible through the cobalt glass?
The cobalt glass blocks distracting and common yellow fire, it serves as an optical filter in flame tests, to filter the yellow flame cause by contamination of sodium
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.
What is the texture for cobalt?
The texture, Is like glass. Because; The pigments and color are like the blue and green cobalt plates they make.
What elements are used to colour glass?
metallic oxides such as those of copper, cobalt, etc are used to color glass.
What is the colour of flame given by 'K' salts?
Potassium containing salts (K+) emit a lilac color with a peak emission wavelength of 766.5 nm. Intensity is quite low, compared to the bright orange flame colour caused by traces of sodium often present in K samples. Even from a glass rod the orange Na-line flame color is exuberant.
What is cobalt glass?
cobalt glass is glass containing cobalt oxide or cobaltous oxide as a colouring agent. These oxides give the glass a blue colouring.
What do they put in cobalt glass to make it blue?
Cobalt is known for blue colouring: cobalt silicate and cobalt(II) aluminate (CoAl2O4, "cobalt blue") provide a distinctive deep blue color to glass, ceramics, inks, paints and other substances. Cobalt was added to the glass to protect the liquids it might contain from damaging light rays. (Image courtesy of Jurii, Creative Commons Attribution 1.0 license.) But like its sister transition metals, cobalt can assume a number of beautiful colours besides blue.
How are electron excited in a flame test anylses?
In The name of God Introduction: Flame test is method to identify the element (metal ions) based on Emission spectrum. The test involve putting sample of Unknown element and see what color appears. Also Thermal excited electron goes from low to high energy level which raises the color but when the excitation ends electron gets to lower level which make the color back to normal. Then compare it to flame test result of former lab but after testing it with cobalt blue glass. Material: 1- Safety Goggles 2- 250 mL beaker 3- 500 mL beaker 4- Bunsen burner 5- Cobalt blue glass 6- Distilled water 7- Flame test wire 8- Dropper 9- Test plate with walls 10- Spectroscope 11- HCl solution 12- Unknown Solution Number 6 Procedure: 1- Small amount of HCl was added to small 250 mL beaker. 2- The Bunsen burner was lighted. 3- The flame test wire was dipped into the HCl for minute then heated by holding it in the Bunsen burner for another minute or until all the red color is gone. 4- The flame test wire was cooled and then rinsed with distilled water into 500 mL beaker. 5- Full drop of unknown solution # 6 was added to test plate. 6- The flame test wire was dipped into unknown # 6 Solutions. 7- Then the flame test wire was put to fire. 8- The procedure No. 3&4 were repeated to clean the flame test wire. 9- The flame test was dipped again in the Unknown solution # 6. 10- Blue Cobalt glass was used to test the color. 11- The flame test wire was put to fire while holding the blue cobalt glass. Soruces : My school Flame Test Lab for Pro.Jennifer Regards : Abdrahman Ali
