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Select the best indicator from the given...

Select the best indicator from the given table for titration of 20 mL of 0.02 M `CH_(3)COOH with 0.02 M NaOH. Given `pK_(a)` `(CH_(3)COOH)=4.74`
`{:(,"Indicator","pH range"),((I),"Bromothymol blue",6.0-7.6),((II),"Thymolphthalein",9.3-10.5),((III),"Malachite green",11.4-13),((IV),"M-Cresol purple",7.4-90):}`

A

I

B

II

C

III

D

IV

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The pH of a solution obtained by mixing 100mL of 0.3M CH_(3)COOH with 100mL of 0.2 M NaOH would be: ( pK_(a) for CH_(3)COOH=4.74 )

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NARENDRA AWASTHI-IONIC EEQUILIBRIUM-Exercise
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