Daffodil International University

Faculties and Departments => Faculty Sections => Departments => Topic started by: ABM Nazmul Islam on October 25, 2014, 01:14:24 PM

Title: what happens when common salt is dissolved in water?
Post by: ABM Nazmul Islam on October 25, 2014, 01:14:24 PM

The attraction between the Na+ and Cl− ions in the solid is so strong that only highly polar solvents like water dissolve NaCl well. When dissolved in water, the sodium chloride framework disintegrates as the Na+ and Cl− ions become surrounded by the polar water molecules. These solutions consist of metal aquo complex with the formula [Na(H2O)8]+, with the Na-O distance of 250 pm. The chloride ions are also strongly solvated, each being surrounded by an average of 6 molecules of water. Solutions of sodium chloride have very different properties from pure water. The freezing point is −21.12 °C (−6.02 °F) for 23.31 wt% of salt, and the boiling point of saturated salt solution is near 108.7 °C (227.7 °F). From cold solutions, salt crystallises as the dihydrate NaCl•2H2O.

Title: Re: what happens when common salt is dissolved in water?
Post by: smriti.te on January 08, 2015, 08:48:16 AM

informative

Title: Re: what happens when common salt is dissolved in water?
Post by: smriti.te on January 08, 2015, 08:55:00 AM

informative

Title: Re: what happens when common salt is dissolved in water?
Post by: Mosammat Arifa Akter on April 19, 2015, 05:41:00 PM

Informative post..Thanks for sharing..

Title: Re: what happens when common salt is dissolved in water?
Post by: silmi on November 22, 2015, 04:01:53 PM

Informative post.