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Q.

Which of the following is/are correct for H3BO3?

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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

answer is D.

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Detailed 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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