In the reaction of Alkali metals with water,the products formed are- 2 metal ions,2OH ions and 2 hydrogen atoms. Please explain me the formation of ions and cations?

Asked by divyakhare | 11th Aug, 2010, 12:00: AM

Expert Answer:

Since 2 hydrogen atoms combine to form a hydrogen molecule therefore, 2 water molecules dissosciate to give 2 hydrogen ions and 2 hydroxide ions

so the net reaction becomes

2M(s) + 2H2O(l) ---> 2M+(aq) + 2OH-(aq) + H2(g)

2Na(s) + 2H2O(l)---> 2NaOH(aq) + H2(g)

Answered by  | 11th Aug, 2010, 11:49: AM

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