JEE Main 2022 · 29 Jul · Shift 2 · Chemistry Q80

← JEE Main 2022 · 29 Jul · Shift 2

ChemistrySingle correct+4 / -1Question 80 of 90

A compound 'X' is a weak acid and it exhibits colour change at pH close to the equivalence point during neutralization of NaOH with CH $_3$ COOH. Compound 'X' exists in ionized form in basic medium. The compound 'X' is

methyl orange

methyl red

phenolphthalein

erichrome Black T

Answer and worked solution

Official answer: C

Weak acid, strong base: the equivalence point is basic (about pH 8 to 9), matched by phenolphthalein, a weak acid that is pink in its ionised form in base.

(C)

Topics:Indicators and titrations

← Previous question Next question →

JEE Main 2022 · 29 Jul · Shift 2, Chemistry question 80