Question

2.1.4 How do Acids and Bases React with each other? nes
Activity 2.6
Take about 2 mL of dilute NaOH solution in a test tube and add
two drops of phenolphthalein solution.
What is the colour of the solution?
Oroles
Add dilute HCl solution to the above solution drop by drop.
Is there any colour change for the reaction mixture?
*Why did the colour of phenolphthalein change after the addition
of an acid?*
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Answer 1

Answer:

ACIDE+BASE-> SALT+H2(G)

WHEN PHENOPLPHTHALEINIS ADDED TO NaOH SOLUTION IT GIVES NO COLOUR

BUT WHEN WE ADD HCL DROP BY DROP

IT REACT WITH NaOH . AFTER SOME TIME

WHEN A DROP IS FALL IN THE SOLUTION

IT GIVE VERY LIGHT PINK COLOR.

Explanation:

NaOH +HCL-> NaCL +CL2 H2O

(UNBALANCED EQUATION)

Answer 2

Answer:

I don't know about this exercise sorry