Which of the following statements is true about indicators ?

Indicators are strong acids or bases

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The colour change of indicator is due to the shift in equilibrium

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Any indicator is suitable for any titration

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Both A and B

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Solution

The correct option is A The colour change of indicator is due to the shift in equilibrium
The colour change of indicator in the respective solution corresponds to the relative concentrations of ionized and unionized forms of the indicator. This depends on equilibrium position.

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Similar questions

Q. Consider the following statements :

(A) Both acids and bases change the 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

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

Q. Assertion :The titration curve for weak acid and weak base has no sharp change. For this titration no suitable indicator is present. Reason: Indicator should change it's colour sharply for indication of reaction to be complete so its pH-range should lie perfectly with in sharp change to avoid experimental error.

Q. For a series of indicators, the colours and pH range over which colour change takes are as follows:

Indicator	Colour change over pH range
U	Yellow to blue pH 0.0 to 1.6
V	Red to yellow pH 2.8 to 4.1
W	Red to yellow pH 4.2 to 5.8
X	Yellow to blue pH 6.0 to 7.7
Y	Colourless to red pH 8.2 to 10.0

Which of the following statements is/are correct?

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Which of the following statements is true about indicators ?

The correct option is A The colour change of indicator is due to the shift in equilibriumThe colour change of indicator in the respective solution corresponds to the relative concentrations of ionized and unionized forms of the indicator. This depends on equilibrium position.

The correct option is A The colour change of indicator is due to the shift in equilibrium
The colour change of indicator in the respective solution corresponds to the relative concentrations of ionized and unionized forms of the indicator. This depends on equilibrium position.