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6.2. Equilibrium - II (icon Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.2. Equilibrium - II (icon Equilibrium)1 Mark
MCQ
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.
  • A
    methyl orange
  • B
    methyl red
  • ✓
    phenolphthalein
  • D
    erichrome Black $T$
✓

Answer

Correct option: C.
phenolphthalein
c
Phenolphthalein is weak acid give colour in basic medium.

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