Question
Explain structures of boric acid.
✓
Answer
Boric acid: Boric acid has a layered structure. Each planar $\mathrm{BO}_3$ unit is linked to one another through H atoms. The H atoms form a covalent bond with a $\mathrm{BO}_3$ unit, while a hydrogen bond is formed with another $\mathrm{BO}_3$ unit. In the given figure, the dotted lines represent hydrogen bonds.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
- What are two conditions for the formation of hydrogen bond?
- In which of the following compounds 'S' does not obey octet rule?
- Explain the term hybridisation taking $\text{CH}\equiv\text{CH}$ as an example.
What is the significance of the terms — ‘isolated gaseous atom’ and ‘ground state’
while defining the ionization enthalpy and electron gain enthalpy?
Hint : Requirements for comparison purposes.
while defining the ionization enthalpy and electron gain enthalpy?
Hint : Requirements for comparison purposes.
Define the first law of thermodynamics and also derive its mathematical form.
Write the general outer electronic configuration of s-, p-, d- and f- block elements.
Give reasons for the following:
-
Covalent bonds are directional bonds while ionic bonds are non- directional.
-
Water molecule has bent structure whereas carbon dioxide molecule is linear.
-
Ethyne molecule is linear.
Among $\mathrm{NH}_3, \mathrm{H}_2 \mathrm{O}$ and HF , which would you expect to have highest magnitude of hydrogen bonding and why?
→The +1 oxidation state in group 13 and +2 oxidation state in group 14 becomes more and more stable with increasing atomic number. Explain.
Explain scientific notation in detail.
Enthalpy diagram for a particular reaction is given in Fig. Is it possible to decide spontaneity of a reaction from given diagram. Explain.
Pay load is defined as the difference between the mass of displaced air and the mass of the balloon. Calculate the pay load when a balloon of radius $10 \ m$ , mass $100 \ kg$ is filled with helium at 1.66 bar at $27^{\circ} C$. (Density of air $=1.2 kg$ $m ^{-3}$ and $R =0.083 bar dm ^3 K^{-1} mol^{-1}$ ).
→