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what is difference between (aq) and (l) ?

Dear Student,

Please find below the solution to the asked query: 
(aq) means an aqueous solution . When something is dissolved in water it forms an aqueous solution, a watery solution,. When salt is dissolved in water we get an aqueous solution.

(l) means a liquid state of the substance.When water or any substance (in the liquid state) is used in a reaction or obtained in the product we write (l) next to it which signifies a liquid state.

                                Ca(s) + 2H2O(l)  →  Ca(OH)2(s) + H2(g)
                                       Zn(s) + 2HCl(l)   →  ZnCl2(aq) + H2(g)

Regards
 

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'Aqueous' in a chemical equation indicates that the material dispersed in water (a solution in water). For example, when we pour sodium hydroxide solution into dilute hydrochloric acid, we get an aqueous solution of sodium chloride. Liquid is used to indicate formation of liquid substances in a reaction.
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