What happens when acid reacts with methyl orange?

Methyl orange shows red color in acidic medium and yellow color in basic medium. In a solution becoming less acidic, methyl orange changes from red to orange and, finally, to yellow—with the reverse process occurring in a solution of increasing acidity.

What happens when a drop of phenolphthalein is added in a test tube containing sodium hydroxide solution?

When few drops of phenolphthalein are added to a dilute solution of sodium hydroxide a pink colour is produced.

What happens when you add phenolphthalein to an acid?

Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. Phenolphthalein changes colour sharply at about pH 8. For most purposes, this means that it is pink in alkaline solutions and colourless in acidic solutions.

What happens when two drops of the indicator phenolphthalein is added to solution of sodium hydroxide *?

Solution. When two drops of Phenolphthalein indicator are added to 10 mL solution of Sodium hydroxide, then the solution turns pink in colour because the acidic part of phenophthalein reacts with the base, it forms sodium salt of phenolphthalein which has pink color.

What is the colour change observed in phenolphthalein and methyl orange when added to nitric acid?

(b). Nitric acid -> (i) colourless solution in phenolphthalein . (ii) colour changes to red in methyl orange .

What will be the change in the colour observed when methyl orange is added to base?

yellow
Note:Methyl orange shows different colours in acid, base and neutral substance. It changes colour from red to orange to yellow as the pH of the solution increases. As the pH decreases the colour changes from yellow to orange to red.

What do you observe when you add 2 drops of phenolphthalein to 2 ml of dilute NaOH solution in a test tube?

When phenophthalein added to NaOH solution, it’s colour becomes pink.

What happens when a few drops of phenolphthalein are added to an acidic and a basic solution?

Answer: Phenolphthalein gives no color when added to an acidic solution. Phenolphthalein is an acid indicator,means when we add water (pH 7) to it,it ionizes giving a pink color.

What is the purpose of adding two drops of phenolphthalein?

The reason they say “two drops” and not “at least two drops” is that they don’t want you to be wasteful. Phenolphtalein is slightly acidic. It does affect titration because if you add too much, then it will alter the concentration of whichever solution you are adding it in.

What chemical is formed when acid is added to phenolphthalein?

Between strongly acidic and slightly basic conditions, the lactone form (HIn) is colorless. The doubly deprotonated (In2-) phenolate form (the anion form of phenol) gives the familiar pink color.

What is observed when two drops of phenolphthalein is added to potassium hydroxide?

pink In alkaline solution, phenolphthalein gives pink color as it works as an indicator which shows its endpoint when it reacts with hydroxide ions of the base.

What is observed when phenolphthalein is added to dilute HCL?

Phenolphthalein acts as an indicator which turns the colour of the acidic solution pink. When the indicator is added to dilute hydrochloric acid, the colour of the solution changes to pink due to its acidic nature.