Question

b. Raman dipped a few china rose flowers in warm water. The colour of the water changed from transparent to pink in colour
. i. How can he put this pink coloured liquid to use?
ii. What would happen if he adds this liquid to lemon juice?
iii. His friend added soap water solution to this pink-coloured water. What change would be observed?
iv. Discuss the reasons behind the above changes in colour. Arnah's th​

Answer 1

Answer:

i) :- he can use it as an indicator.

ii) :- as lemon juice is an acid, then it will turn dark magenta colour because it reacts with the indicator.

iii) soap water is a base so when it is mixed with china rose water, it changes to green colour as it reacts with it.

iv) indicators are used to see whether a substance is acid or liquid. it has different colours when mixing with acid and base. there are different indicators which also change their colour once they come in reaction with each other.