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ICSE Class 10 Chemistry 2014 Paper

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Question : 57 of 88
Marks: +1, -0
Draw the structure of the stable positive ion formed when an acid dissolves in water.
Solution:  
Hydronium ion (H3O+)(\mathrm{H}_3\mathrm{O}^{+})
H++H2O→H3O+=[H−HO....↑−H]+\mathrm{H}^{+} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{H}_3\mathrm{O}^{+} = \left[\mathrm{H}- \underset{\overset{..}{O}}{\mathrm{H}} \overset{ \uparrow}{..} - \mathrm{H}\right]^{+}
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