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-p-Block elements - I — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Boric acid is an acid because its molecule 
  • A
    contains replaceable $H^+$ ion
  • B
    gives up a proton
  • ✓
    accepts $OH^-$ from water releasing proton.
  • D
    combines with proton from water molecule.
✓

Answer

Correct option: C.
accepts $OH^-$ from water releasing proton.
c
Boric acid is an acid because its molecule accepts $\mathrm{OH}^{-}$ from water releasing proton

$\mathrm{B}(\mathrm{OH})_{3}+\mathrm{H}_{2} \mathrm{O} \longrightarrow\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{(-)}(\mathrm{aq})+\mathrm{H}^{(-)}(\mathrm{aq})$

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