Question

‘X’ is an indicator added to a dilute NaOH solution. The color of the solution turns pink. When a substance ‘Y’ is added to this solution, the solution becomes colorless. ’Y’ also combines with sodium hydroxide to form salt that we use in food in everyday life.
(I) Identify X and Y
(ii) Give the reaction of Y with sodium hydroxide
(iii) Name the type of reaction happened.
(iv) What is the pH of Y.

Answer 1

X is a indicator added to NaOh solution. The colour of the solution turns pink when substance Y is added to the solution the solution become colourless.also Y is combined with sodium hydroxide to form salt that we use in everyday life.

Answer 2

Answer:

i. X is Phenolphthalein Y is HCL

ii. Naoh +Hcl = Nacl + H20

iii. It is a neutralization reaction or Redox reaction

iv. ph of Hcl is 3.01