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This could be due to the fact that a sodium vapour lamp contains neon gas and when a current is passed through the two electrodes in the lamp the neon gas becomes ionised and shines red until vapourisation occurs and the sodium cause the typical characterised yellow.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoA low-pressure sodium vapour lamp such as those used for street lighting contains a small amount of neon/argon gas mixture which gives the initial pinkish-red glow at switch-on. It takes an amount of time for the sodium metal inside the lamp to warm up and vapourise before it will glow with the familiar yellow-orange light.
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What colour is the precipitate sodium phosphate and ammonium molybdate form?
Yellow Yellow
What colour of flame does sodium chloride produce when heated?
Bright yellow
Does sodium give off an orange flame?
sodium gives off an orange to yellow flame colour
What happens if you use a mercury source instead of sodium vapour lamp in diffraction grating experiment?
sodium vapour lamps produce much higher light output (about 90 lumens/watt) they cannot be used in lighting applications where colour-rendering property is very crucial. This is because most of the light emitted from a sodium vapour lamp is concentrated in the yellow part of the visible spectrum (around 580-590 nm) On the other hand, a mercury vapour lamp is quite suitable for lighting applications. This is because, the mercury vapour lamp can feed almost the entire visible region (380-780 nm) of the human visual system.
What color does sodium chloride change to when heated in water?
sodium is a vomit colour with bits of grass mixed through
What colour would sodium chloride produce in heat?
In a flame, sodium chloride produces a bright orange-yellow colour.
What is one way in which you can identify the elements that are used in various street lights?
By the colour of the light that they emit. Sodium vapour lamps produce yellow/orange light while Mercury vapour lamps produce white light.
Which is the metal vapours used in yellow street lights?
Sodium vapour.
What colour flame do you get when you burn sodium?
You get and orange - yellow colour.
What colour is the precipitate sodium phosphate and ammonium molybdate form?
Yellow Yellow
What color does sodium hydroxide burn in a flame test?
Bright yellow :: This is the sodium ions. Any sodium compound will give a flame test colour of yellow/
What colour is made by mixing methyl orange and sodium hydroxide?
The color is yellow.
What colour of flame does sodium chloride produce when heated?
Bright yellow
Does sodium give off an orange flame?
sodium gives off an orange to yellow flame colour
What happens if you use a mercury source instead of sodium vapour lamp in diffraction grating experiment?
sodium vapour lamps produce much higher light output (about 90 lumens/watt) they cannot be used in lighting applications where colour-rendering property is very crucial. This is because most of the light emitted from a sodium vapour lamp is concentrated in the yellow part of the visible spectrum (around 580-590 nm) On the other hand, a mercury vapour lamp is quite suitable for lighting applications. This is because, the mercury vapour lamp can feed almost the entire visible region (380-780 nm) of the human visual system.
Principle of working of a sodium vapour lamp?
In a low pressure sodium vapour lamp, argon or neon gas is first heated up to emit a slight red or purple glow. The heat from this warms sodium metal in the light to the point of vaporizing, which is when the familiar yellow glow begins.
If you replace mercury light with sodium vapour lamp in spectrometer experiment what colors do you observe in the spectrum?
Green, Yellow and Orange.
