Which statement regarding `H_(3)BO_(3)` is not correct?
It is a strong tribasic acid
It is prepared by acidifying an aqueous solution of borax
It has a layer structure in which planar `BO_(3)` units are joined by H-bonds
It does not act as proton donor but acts as Lewis acid by accepting a lone pair from `H_(2)O` and producing `H^(+)` ions

Which of the following statements about H_(3) BO_(3) is not correct ?

Which statement is not correct about H_3BO_3 ?

Accepting the definition that an acid is a proton donor, the acid in the following reaction NH_(3)+H_(2)O rarr NH_(4)^(+)+OH^(-) is

An aqueous soluton contain a substance which yields 4 xx 10^(-3) mol "litre"^(-1) ion of H_(3)O^(+) . If log 2 is 0.3010 the pH of the solution is :

The comple [Fe(H_(2)O)_(6)NO]^(2+) is formed in the brown ring test fro nitrates when freshly prepared FesO_(4) solution is added to aqueous solution of NO_(3)^(-) ions followed by addition of conc. H_(2)SO_(4) . Select correct statement about this complex.

When BCl_(3) is treated with water, it hydrolyses and forms [B[OH]_(4)]^(-) only whereas AlCl_(3) in acidified aqueous solution forms [Al[H_(2)O]_(6)]^(3+) ion. Explain what is the hybridisation of boron and aluminium in these species ?

Which of the following statements are correct for SO_(2) gas? (a) It acts as bleaching agent in moist conditions. (b) Its molecule has linear geometry. (c ) Its dilute solution is used as disinfectant. (d) It can be prepared by the reaction of dilute H_(2)SO_(4) with metal sulphide.

Statement-1: It is difficult to distinquish the strengths of the strong acids such as HCl, H_2SO_4,HNO_3, HBr, HI or HCIO_4 in dilute aqueous solutions. Statement-2 : In dilute aqueous solution all strong acids donate a proton to water and are essentially 100% ionised to produce a solution containing H_3O^(+) ions plus the anions of strong acid.

Statement-1: Aluminium chloride has chloro-bridged structure in vapour phase. Statement-2: Aluminium chloride in acidified aqueous solution forms [Al(H_(2)O)_(6)]^(3+)

Consider the following species: (C_(3)H_(5))_(3)Al Find out total number of species which can act as Lewis acid.