First slide

Orthoboric acid

Question

Which of the following is/are correct for H₃BO₃?

Moderate

A

It is white crystalline solid with soapy touch
B

It is sparingly soluble in cold water but highly soluble in hot water
C

It is used as mild antiseptic for eyes
D

All of the above

Solution

Orthoboric acid is a Lewis acid ,it accepts ${OH}^{-}$ ions from water and does not dissociate so slightly soluble
Orthoboric acid has layer like structure and adjacent layers are held by weak attractive forces so soapy to touch
It is less toxic.

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