Question

What happens
(A) When boric acid is added to water
(B)${\text{B}}{{\text{F}}_{\text{3}}}$ is treated with ammo

Answer 1

Hint: The molecular formula of boric acid is ${{\text{H}}_{\text{3}}}{\text{B}}{{\text{O}}_{\text{3}}}$. Boric acid is prepared from borax ${\text{N}}{{\text{a}}_{\text{2}}}{{\text{B}}_{\text{4}}}{{\text{O}}_{\text{7}}}$.In all actually, there wouldn’t be any borax without boric acid as it is a sodium salt of boric acid

Complete step by step answer:
Boric acid accepts an electron from ${\text{O}}{{\text{H}}^{\text{ - }}}$ when it is added to water. Boricacid is sparingly soluble in cold water and fairly soluble in hot water. Boric acid acts as a weak monobasic acid. It doesn't act as a proton-donor, however, behaves as a Lewis-acid, i.e., it accepts a pair of electrons.$B{(OH)_3} + 2HOH \to {[B{(OH)_4}]^ - } + {H_3}{O^ + }$.The reaction forms an adduct and results in a complete octet around boron. An additional complex (adduct) is formed as ammonia ${\text{N}}{{\text{H}}_{\text{3}}}$ acts as a Lewis base and ${\text{B}}{{\text{F}}_{\text{3}}}$ as a Lewis acid. This reaction results in formation of complete octet around ${\text{B}}$ in ${\text{B}}{{\text{F}}_{\text{3}}}$ by sharing with lone pairs of ${\text{N}}{{\text{H}}_{\text{3}}}$. \[{{\text{F}}_{\text{3}}}{\text{B }} + :{\text{N}}{{\text{H}}_{\text{3}}} \to {\text{ }}{{\text{F}}_{\text{3}}}{\text{B}}:{\text{ }} \leftarrow {\text{N}}{{\text{H}}_{\text{3}}}\]

Additional information: Borax is also called sodium tetraborate and it is a powdery white mineral. Borax has countless uses in the modern world. We can use borax both at the house and in the industry. In the house, we can use borax to kill insects such as ants. Borax is employed as washing detergents to whiten and obtain obviate dirt from clothes. Borax can neutralize aromas and softens hard water. In industry, borax can be used as a buffer, a dispersion agent, and welding flux and to regulate viscosity.

Note:
To urge borax we've to heat tetra boric acid at fieriness . Borax won't be formed as a primary product by direct heating of boric acid. Borax has numerous applications including home and industrial applications.