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Phenol red turns back to red when a plant in light is added to the solution in terms of the reaction why does this occur?
Wiki User
∙ 12y ago
Because, the lighted plant is undergoing photosynthesis, so it is giving off oxygen.
Wiki User
∙ 12y ago
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What observations are seen between zinc and copper sulphate reaction?
Solution was blue initially, became light blue and then colorless. Zn is oxidized (Color changed to brown) and the reaction is exothermic.
Why phenol is stored in brown colour bottle?
as phenol gets oxidized when exposed to light forming quinones ( which is not favourable ) , it is stored in a brown botle. in addition, it can also be covered with al foil..
Why iodine kept in dark during titration?
iodine solution should be kept in dark because it is highly photosensetive.light accelerates a side reaction in which iodide ions are converted to iodine..
What color does Biuret turn in the presence of protein?
purple
Why The blue CuSO4 solution turn to a still deeper blue When NH3 is added?
The light blue color of a solution of CuSO4 in water is due to absorption of yellow light by a coordination complex of water and copper cations. When NH3 is added, the water molecules in the coordination complex are replaced by ammonia molecules, and the resulting complex absorbs yellow light more strongly than the original one.
When iron fillings are added to copper II sulphate solution a reaction takes place write a chemical equation for this reaction?
The reaction takes place resulting in the formation of Iron sulphate(light green coloured) and copper(solid). The equation is :- Fe(s) + CuSO4(aq.) ------------> FeSO4(aq.) + Cu(s)
What is a chemical reaction that produces bright colours?
idione solution.
What happens when ammonia solution is added to copper sulphate?
A precipitate is formed which has a light blue colour. After shaking, the precipitate re-dissolves forming a dark blue solution.
What observations are seen between zinc and copper sulphate reaction?
Solution was blue initially, became light blue and then colorless. Zn is oxidized (Color changed to brown) and the reaction is exothermic.
Why does fluorescence occur when a solution of chlorophyll absorbs light recall the light dependent reactions in the intact chloroplast?
It does this because the two substances have a chemical reaction which allows the colour to get brighter
Why iodine solution stored in coloured bottled?
Iodine solution reacts with light to undergo a photodecomposition reaction and therefore must be stored in amber bottles to minimise the amount of light that the solution is exposed to. If stored in a clear bottle it will gradually break down as the iodide ions are gradually converted to iodine and the solution turns a yellowish colour.
Why phenol is stored in brown colour bottle?
as phenol gets oxidized when exposed to light forming quinones ( which is not favourable ) , it is stored in a brown botle. in addition, it can also be covered with al foil..
Why iodine kept in dark during titration?
iodine solution should be kept in dark because it is highly photosensetive.light accelerates a side reaction in which iodide ions are converted to iodine..
What color does Biuret turn in the presence of protein?
purple
Why burning a candle is an exothermic reaction not endothermic?
The reaction releases heat and light to its surroundings, so it is exothermic.
Why The blue CuSO4 solution turn to a still deeper blue When NH3 is added?
The light blue color of a solution of CuSO4 in water is due to absorption of yellow light by a coordination complex of water and copper cations. When NH3 is added, the water molecules in the coordination complex are replaced by ammonia molecules, and the resulting complex absorbs yellow light more strongly than the original one.
Why must the light reaction occur before the dark reaction?
The bi product of the light reaction triggers the dark reaction.
