1.

Which of the following indicators is best suited in the titration of a weak acid versus a strong base?(PK_(10 ) values are given in bracket)

Answer»

PHENOLPHTHALEIN (8,3-10.0)
Methyl orange (3,1-4.4)
Methyl red ( 4,2-6,3)
LITMUS (4.5 -8.3)

Solution :WEAKACID Vs STRONG base
` rArr ` PH at neutralization ` gt 7`
` therefore ` phenolphthalein


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