Answers to chemistry questions asked on 31/07/13

1) What do you understand by auto-ionisation of water?
[asked by: Shelly Ghosh]

neetpcb Answer: Auto ionisation of water is the spontaneous reaction between two water molecules in which they react to give hydronium and hdroxyl ions.

2H2O --> H3O+ + OH-

2) Give some properties of Boric Acid.

[asked by: Stephen Chawla]

neetpcb Answer: 

• Boric Acid is a white-crystalline substance.
• It has a layer in which planar BO3 units are joined by H-bonds.
• It is a weak monobasic acid.

3) Give some uses of super-critical Carbon Monoxide.

[asked by: Shubham Kashyap]

 

neetpcb Answer:  Super-critical Carbon Monoxide is used as a solvent to extract organic compounds from their natural sources (eg.: caffeine from coffee beans)