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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
$BF_3$ on hydrolysis forms
  • A
    $H_3BO_3$
  • B
    $HBF_4$
  • ✓
    both $(A)$ and $(B)$
  • D
    none of these
✓

Answer

Correct option: C.
both $(A)$ and $(B)$
c
$\mathrm{BF}_{3}$ Partial hydrolysis.

$\mathrm{BF}_{3}+3 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{B}(\mathrm{OH})_{3}+3 \mathrm{HF}$

$3 \mathrm{HF}+3 \mathrm{BF}_{3} \rightarrow 3 \mathrm{H}\left[\mathrm{BF}_{4}\right]$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$4 \mathrm{BF}_{3}+3 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{B}(\mathrm{OH})_{3}+3 \mathrm{H}\left[\mathrm{BF}_{4}\right]$

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