A curry made of turmeric (haldi,an indicator of acid or base) falls on a white table cloth. when we wash it with acid or a base, there it no indication on it, whereas if used differently shows change in colour. why so?

Open in App

Solution

Because turmeric is an acid base indicator which shows color at a particular pH values i.e for acid solution (pH is <7.4) it turns yellow
And Bright red for basic solution (pH>8.6)

Suggest Corrections

Similar questions

Consider the following statements:

a. Both acids and bases change colour of all indicators.

b. If an indicator gives a colour change with an acid, it does not give a change with a base.

c. If an indicator changes colour with a base, it does not change colour with an acid.

d. Change of colour in an acid and a base depends on the type of the indicator.

Which of these statements are correct?

Consider the following statements:

(a) Both acids and bases change colour of all indicators.

(b) If an indicator gives a colour change with an acid, it does not give a change with a base.

(d) Change of colour in an acid and a base depends on the type of the indicator.

Which of these statements are correct?

(i) All four (ii) a and d (iii) b and c (iv) only d

Q. Olfactory indicators change their on addition of an acid or a base to it.

Q. Turmeric is a natural indicator. On adding its paste to acid and base separately, which colour would be observed ?

Question 11
Consider the following statements:

Which of these statements are correct?

(a) Both acids and bases change colour of all indicators.
(b) If an indicator gives a colour change with an acid, it does not give a change with a base.
(c) If an indicator changes colour with a base, it does not change colour with an acid.
(d) Change of colour in an acid and a base depends on the type of the indicator.

Which of these statements are correct?
(i) All four
(ii) a and d
(iii) b and c
(iv) only d

Join BYJU'S Learning Program

A curry made of turmeric (haldi,an indicator of acid or base) falls on a white table cloth. when we wash it with acid or a base, there it no indication on it, whereas if used differently shows change in colour. why so?

Because turmeric is an acid base indicator which shows color at a particular pH values i.e for acid solution (pH is <7.4) it turns yellowAnd Bright red for basic solution (pH>8.6)

Because turmeric is an acid base indicator which shows color at a particular pH values i.e for acid solution (pH is <7.4) it turns yellow
And Bright red for basic solution (pH>8.6)