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CBSE Class 10 Answered

How can we know that a given solution is aqueous as I am very much confused that H2O is liquid whereas ZnCl2 is aqueous can you tell me a shortcut . And please also tell me how to know that the given thing is elemnt like in my test I wrote H2S as liquid whereas it is gas. I shall be greatful to you.
Asked by Ananay | 03 Mar, 2017, 05:44: PM
answered-by-expert Expert Answer

H2O is a liquid and so it is represented as H2O(l)  int the chemical equation.

In case of salts which are solid like sodium chloride, zinc chloride when dissolved in water are represented as NaCl(aq) and ZnCl2(aq) in the chemical equation.

Gases released in the reactions are represented with an upward arrow. Compounds like carbon dioxide, sulphur dioxide , hydrogen sulphide are gases and are represented with an upward arrow.

 

Answered by | 03 Mar, 2017, 05:55: PM

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