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When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to
- a)ammoniated electron
- b)ammoniated sodium ion
- c)sodium ion
- d)sodium amide
Correct answer is option 'A'. Can you explain this answer?
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When sodium is dissolved in liquid ammonia, a solution of deep blue co...
The color of solution is due to the presence of ammoniated electron.
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When sodium is dissolved in liquid ammonia, a solution of deep blue co...
When sodium is dissolved in liquid ammonia, a deep blue-colored solution is obtained. This color is due to the presence of ammoniated electrons in the solution.
Explanation:
- Dissolving sodium in liquid ammonia is an example of a solvated electron system. Solvated electrons are formed when a metal reacts with a solvent to produce a solution containing excess electrons.
- In this case, the solvent is liquid ammonia (NH3) and the metal is sodium (Na).
- When sodium is introduced into liquid ammonia, it reacts with the ammonia molecules to form sodium cations (Na+) and ammoniated electrons (e-).
- The ammoniated electrons are responsible for the deep blue color of the solution.
- The blue color arises from the absorption of light in the visible region of the electromagnetic spectrum by the ammoniated electrons.
- The energy levels of the ammoniated electrons are quantized, meaning they can only absorb certain wavelengths of light corresponding to specific energy transitions.
- In the case of the sodium-ammonia solution, the absorbed light corresponds to the blue region of the spectrum, leading to the observed blue color.
- The presence of ammoniated electrons in the solution can also be confirmed by conducting electrical conductivity tests. As the ammoniated electrons are mobile, they allow for the conduction of electricity.
- The blue color of the solution gradually fades upon exposure to air, as the ammoniated electrons react with oxygen to form sodium amide (NaNH2) and other products.
In summary, the deep blue color of the sodium-ammonia solution is due to the presence of ammoniated electrons, which absorb light in the blue region of the spectrum.
Explanation:
- Dissolving sodium in liquid ammonia is an example of a solvated electron system. Solvated electrons are formed when a metal reacts with a solvent to produce a solution containing excess electrons.
- In this case, the solvent is liquid ammonia (NH3) and the metal is sodium (Na).
- When sodium is introduced into liquid ammonia, it reacts with the ammonia molecules to form sodium cations (Na+) and ammoniated electrons (e-).
- The ammoniated electrons are responsible for the deep blue color of the solution.
- The blue color arises from the absorption of light in the visible region of the electromagnetic spectrum by the ammoniated electrons.
- The energy levels of the ammoniated electrons are quantized, meaning they can only absorb certain wavelengths of light corresponding to specific energy transitions.
- In the case of the sodium-ammonia solution, the absorbed light corresponds to the blue region of the spectrum, leading to the observed blue color.
- The presence of ammoniated electrons in the solution can also be confirmed by conducting electrical conductivity tests. As the ammoniated electrons are mobile, they allow for the conduction of electricity.
- The blue color of the solution gradually fades upon exposure to air, as the ammoniated electrons react with oxygen to form sodium amide (NaNH2) and other products.
In summary, the deep blue color of the sodium-ammonia solution is due to the presence of ammoniated electrons, which absorb light in the blue region of the spectrum.
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When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due toa)ammoniated electronb)ammoniated sodium ionc)sodium iond)sodium amideCorrect answer is option 'A'. Can you explain this answer?
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