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WHY DOES PHENOLPHTHALENE TURNS COLORLESS WHEN ADDED BY SULFURIC ACID?
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Will acids turn phenolphthalene indicator pink?
No, phenolphthalein turns colourless when it comes into contact with an acid. It only turns magenta with a base (alkali)
What is the reaction called when sulfuric acid turns black and what is the reaction called?
Sugar Dehydration occurs when sugar is added to sulfuric acid, in the reaction the sugar is broken down into graphite which is black and bubbles with the escaping vapor. This reaction is a exothermic reaction.
What happens when you add universal indicator to sulfuric acid?
It turns the universal indicator to scale 1
Why is phenolphthalein colorless in hydrochloric acid?
phenolphthalein only turns pink in a solution that is a base. Hydrochloric acid is obviously an acid.
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.
Will acids turn phenolphthalene indicator pink?
No, phenolphthalein turns colourless when it comes into contact with an acid. It only turns magenta with a base (alkali)
How will Phenolphthalein help you test for unknown substances?
phenolphthalein turns pink when basic solution is added to it but remains colorless in case of neutral and acidic solution
What is the reaction called when sulfuric acid turns black and what is the reaction called?
Sugar Dehydration occurs when sugar is added to sulfuric acid, in the reaction the sugar is broken down into graphite which is black and bubbles with the escaping vapor. This reaction is a exothermic reaction.
Why NaCl turns colourless when melted?
NaCl pure is also colorless at room temperature.
What is phenolsulfonate?
Phenolsulfonate is a colorless to white crystalline solid which turns pink on exposure to air.
Is carbon dioxide a red gas that turns limestone pink?
Carbon dioxide is a colorless gas.
What happens when you add universal indicator to sulfuric acid?
It turns the universal indicator to scale 1
When biuret reagent is added to an unknown colorless solution the solution turns light purple. this indicates the presence of which molecules?
process that release energy by breaking down food molecules in the presence of oxygen
Why is phenolphthalein colorless in hydrochloric acid?
phenolphthalein only turns pink in a solution that is a base. Hydrochloric acid is obviously an acid.
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 salt turns blue when added to lemon juise?
Salt turns blue when added to lemon juice because it has iodine inside it. When lemon juice is added to iodine, it changes colour.
What color is glucose when lugol's iodine is added?
I did this lab experiment in my biology class. When Lugol's indicator is added to glucose, it turns to a dark green colour for starch it turns black and for surcose it turns yellow.
