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What color change is there when you add black copper oxide to sulfuric acid?
When you add black copper oxide to sulfuric acid, the solution turns blue because copper sulfate was formed and it is a colored compound.
WHY DOES PHENOLPHTHALENE TURNS COLORLESS WHEN ADDED BY SULFURIC ACID?
When phenolphthalein is added to sulfuric acid, the sulfuric acid causes the phenolphthalein molecule to lose its specific color due to a chemical reaction that alters its molecular structure. This reaction likely involves protonation of the phenolphthalein molecule, leading to a change in its absorption of light and resulting in a colorless solution.
What is the colour of litmus in sulfuric acid?
Litmus turns red in sulfuric acid.
What is the reaction when carbohydrate is heated with sulfuric acid?
when the carbohydrate is heated with sulphuric acid, the sulphuric acid will ripping the water off the carbons, leaving just the black carbon [the water turns to steam] the carbohydrate become charring
If iodine solution turns blue-black what substance is present?
Starch is likely present in the solution if iodine turns blue-black. This color change is a characteristic reaction that indicates the presence of starch.
What color change is there when you add black copper oxide to sulfuric acid?
When you add black copper oxide to sulfuric acid, the solution turns blue because copper sulfate was formed and it is a colored compound.
WHY DOES PHENOLPHTHALENE TURNS COLORLESS WHEN ADDED BY SULFURIC ACID?
When phenolphthalein is added to sulfuric acid, the sulfuric acid causes the phenolphthalein molecule to lose its specific color due to a chemical reaction that alters its molecular structure. This reaction likely involves protonation of the phenolphthalein molecule, leading to a change in its absorption of light and resulting in a colorless solution.
What reaction does an organic compound have when it is burn?
It turns black because the carbon in an organic substance turns into charcoal.
What is the colour of litmus in sulfuric acid?
Litmus turns red in sulfuric acid.
If you put a banana in a cupboard for a week and it turns black does that mean it is a chemical reaction?
No, the banana turning black is not a chemical reaction in the traditional sense. It is a natural process called enzymatic browning, where enzymes in the banana react with oxygen in the air, causing the fruit to darken. The change in color is due to the breakdown of pigments in the banana, not a chemical reaction.
What is the chemical reaction that takes place when an microorganism turns one substance into another?
This reaction is called fermentation.
Why does diphenylamine turn blue?
Diphenylamine turns blue when it reacts with nitrate ions in the presence of sulfuric acid. This reaction forms a blue-colored complex called Ruhemann's purple. The intensity of the blue color can depend on the concentration of the reactants and the pH of the solution.
What is the reaction when carbohydrate is heated with sulfuric acid?
when the carbohydrate is heated with sulphuric acid, the sulphuric acid will ripping the water off the carbons, leaving just the black carbon [the water turns to steam] the carbohydrate become charring
If iodine solution turns blue-black what substance is present?
Starch is likely present in the solution if iodine turns blue-black. This color change is a characteristic reaction that indicates the presence of starch.
Which white powder turns black when it touches iodine?
Starch is a white powder that turns black when it comes in contact with iodine. This reaction is often used as a simple test for the presence of starch in a substance.
What turns blue black when stained with iodine?
Starches turn blue-black when stained with iodine (which usually stains things a reddish-brown or amber color).Iodine turns blue black when starch is present
What turns color in the presence of strach?
In the presence of starch, iodine turns purple.
