Hopelss - need hope.

JEE Mains 2015 Papers › Inorganic Chemistry questions › Hopelss - need hope.

Colemante on being treated with Sodium Carbonate gives Calcium Carbonate, and (A) & (B). A on being treated with CO₂ gives B with Sodium Carbonate.
B+HCl(conc) gives NaCl & an acid, which on being treated with water gives another acid (C).
IDENTIFY A,B,C.

#Chemistry #Inorganic Chemistry

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7 Answers

13

Avik ·2010-03-04 09:38:38

I think....

A) NaBO₂
B) Na₂B₄O₇
C) H₃BO₃ ....?

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1

Arka Halder ·2010-03-04 09:44:21

A is NaOH.
B is Na₂B₄O₇ and C is HBO₂.
are the answers right soumik?

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11

Devil ·2010-03-08 09:38:18

Avik is correct!

I was only confused which was Sodium-Metaborate and which was Borax? Can u say how u identified them - avik?

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1

Arka Halder ·2010-03-09 00:28:23

Well u know i checked it later on the net and the same thing as i said was given.
even avik checked it out.

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13

Avik ·2010-03-09 00:30:32

Because, tht is a specific & important Borax prep. (NaBO₂ with CO₂)....!!

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13

Avik ·2010-03-09 00:31:38

Arka,,,,Forget tht equation, tht was wrong....pucca.

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Arka Halder ·2010-03-09 00:33:40

Ya anyway my ans of A was wrong as A with CO2 gives Na2CO3 and B..which i didnt quite realise then.

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Your Answer

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