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When common table salt NaCl dissolves in water, we write the salt solution as NaCl (aq). In the salt solution containing Na^+ (aq) and Cl^-(aq) ions, there are also other ions that are formed from water molecules namely H^+(aq) ions and OH^- (aq) aqueous ions.

However if solid NaCl is heated beyond its melting point of 808 dec C. the melted (molten) sodium chloride should be written as NaCl (l). In NaCl(l), there is no water. It only contains Na^+(l) ions and Cl^- (l) ions.

Water formed from reaction is normally written as H2O (l)

2007-01-23 14:51:46 · answer #1 · answered by pete 2 · 0 0

The answer can be stated simply. A liquid means a pure substance. It can also be water itself, as water can be a reactant or a product in a reaction.

An aqueous solution is a mixture of some solute in water. It can be a solid dissolved in water, such as a salt. Or it can be another liquid dissolved in water, such as an alcohol.

A big advantage of indicating aqueous, is that ionic compounds will automatically be dissociated as ions in the water.

2007-01-23 22:52:49 · answer #2 · answered by reb1240 7 · 1 0

A liquid is a state of matter: liquid nitrogen versus gaseous nitrogen, liquid water versus solid water liquid sodium chloride versus solid sodium chloride.
An aqueous water with some solute dissolved in it aqueous sodium chloride.

2007-01-23 22:30:49 · answer #3 · answered by miley_fan9 3 · 0 0

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