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An acid-base indicator has a K(a) = 3.0 ...

An acid-base indicator has a `K_(a) = 3.0 xx 10^(-5)`. The acid form of the indicator is red and the basic form is blue. Then

A

75 % red form will exist at pH = 4.05

B

75 % blue form will exist at pH = 5.0

C

indicator will show red colour at pH = 3.53

D

Indicator will show blue colour at pH = 5.6

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FIITJEE-IONIC EQUILIBRIUM -ASSIGNMENT PROBLEMS (OBJECTIVE ) LEVEL - II
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  2. Which among the following statement is/are correct ?

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  3. Let us consider the inonisation of HCl in the aqueous solution of C...

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  4. Which of the following species can act both as an acid as well as a ba...

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  5. Which of the following salts will give basic solution on hydrolysis ?

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  6. Which among the following represents the conjugate acid/base pairs...

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  7. If concentration of the salt its aqueous solution is increased , the...

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  8. Equal volume of the following solutions are mixed . In which case t...

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  9. 0.1 mole of CH(3)NH(2) (K(b)=5xx10^(-4)) is mixed with 0.08 mole of HC...

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  10. An acid-base indicator has a K(a) = 3.0 xx 10^(-5). The acid form of t...

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  11. Which of the following solution will have pH = 13?

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  12. Which of the following are true for H(3)PO(2) ?

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  13. Which of the following solution will have pH = 13?

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  14. Which of the following mixtures can be regarded as buffer ?

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  15. Which of the following form conjugate acid - base pairs in the rig...

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  16. Choose the correct statement (s)

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  17. Which among the following will not react with NaOH or which is n...

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  18. Which of the following is/are not correct ?

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  19. Which of the following is/are correct about buffers ?

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  20. Choose the correct statement (s)

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