हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

Explain what happens when boric acid is heated. - Chemistry

Advertisements
Advertisements

प्रश्न

Explain what happens when boric acid is heated.

टिप्पणी लिखिए
Advertisements

उत्तर

On heating orthoboric acid (H3BO3) at 370 K or above, it changes to metaboric acid (HBO2). On further heating, this yields boric oxide B2O3.

\[\ce{H3BO3 ->[\Delta][370 K] \underset{Metaboric acid}{HBO2} ->[\Delta][red hot] \underset{\text{Boric oxide}}{B2O3}}\]

shaalaa.com
Some Important Compounds of Boron
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?

संबंधित प्रश्न

Explain the Structure of Boric Acid.


Explain the following reaction.

Hydrated alumina is treated with aqueous NaOH solution.


A certain salt X, gives the following results.

  1. Its aqueous solution is alkaline to litmus.
  2. It swells up to a glassy material Y on strong heating.
  3. When conc. H2SO4 is added to a hot solution of X, white crystal of an acid Z separates out.

Write equations for all the above reactions and identify X, Y and Z.


Write a balanced equation for \[\ce{H3BO3 ->[\Delta]}\]?


Boric acid is polymeric due to ______.


Draw the structure of boric acid showing hydrogen bonding. Which species is present in water? What is the hybridisation of boron in this species?


A compound (A) of boron reacts with NMe3 to give an adduct (B) which on hydrolysis gives a compound (C) and hydrogen gas. Compound (C) is an acid. Identify the compounds A, B and C. Give the reactions involved.


Which of the following is a FALSE statement about boric acid, \[\ce{H3BO3}\]?


Aqueous solution of which of the following boron compounds will be strongly basic in nature?


Boric acid heated to red hot gives ______.


Which of the following compounds are formed when boron trichloride is treated with water?


In diborane ______.


On the addition of mineral acid to an aqueous solution of borax, the compound formed is ______.


When aqueous solution of AICl3 is concentrated, it furnishes crystals of ______.


Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of “X” with 6-equivalents of “Y”. “X” and “Y”, respectively are ______.


The reaction of H3N3B3Cl3(A) with LiBH4 in tetrahydrofuran gives inorganic benzene (B). Further, the reaction of (A) with (C) leads to H3N3B3(Me)3. Compounds (B) and (C) respectively, are ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×