What is the correct relationship between the pHs of isomolar solutions of sodium oxide (pH1), sodium sulphide (pH2), sodium selenide (pH3) and sodium telluride (pH4)?
pH1 > pH2 = pH3 =pH4
pH1 <pH2 < pH3 <pH4
pH1 < pH2 > pH3< pH4
pH1> pH2 > pH3 > pH4
HF is not preserved in glass bottle because :
it reacts with the visible part of the light
it reacts with the sodium oxide of the glass
it reacts with the aluminium oxide of the glass composition
it reacts with SiO2 of the glass
Which acid has P - P linkage?
Hypophosphoric acid
Pyrophosphoric acid
Metaphosphoric acid
Orthophosphoric acid
Which statement is wrong for NO ?
It is anhydride of nitrous acid
Its dipole moment is 0.22 D
It forms dimer
It is paramagnetic
A.
It is anhydride of nitrous acid
Nitric oxide (NO) is a colourless gas .Its dipole moment is 0.22 D , it forms dimer and it is paramagnetic in nature. Anhydride of nitrous acid is N2O3 .