Question

2.1.4 how do acids and bases react with each other? Activity 2.6 (1)take about 2 ml of dilute naoh solution in a test tube and add two drops of phenolphthalein solution.(2)what is the colour of the solution?(3)add dilute hcl solution to the above solution drop by drop.(4)is there any colour change for the reaction mixture?(5)why did the colour of phenomenon change after the addition of an acid?(6) now add a few drops of naoh to the above mixture.(7)does the pink colour of phenolphthalein reappear?(8) why do you think this has happened? please give me answer​

Answer 1

Answer:

Here is your answer

Explanation:

The colour of solution is pink as phenolphthalein turns pink when added to base.

After adding acid the mixture becomes colourless because acid has neutralized the effect of base and phenolphthalein is colourless in acid.

Yes the pink colour reappears after adding NaOH because again solution has becomes basic in nature.

Neutralization reaction occurs where acid neutralizes base.

Answer 2

Answer:

1.what is the colour of the solution? when phenolphthalein is added to base it changes its color into pink as Naoh is basic in nature.