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![[Post New]](/templates/default/images/icon_minipost_new.gif) 23 Aug 2008 17:59:30 IST
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NaOH is -55.9 KJ/mol.If heat of neutralisation of HCN by NaOH is -12.1 KJ/mol.The energy of dissociation of HCN is--------------
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23 Aug 2008 18:09:02 IST
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Given that enthalpy of neutralisation of a strong acid (HCl) and strong base (NaOH) is -55.9KJ/mol
in case of weak acid (HCN) and strong base (NaOH) some energy is required to dissociate the weak acid into its ions and remaining is relaesed as heat
therefore energy of dissociation = 55.9-12.1 = 43.8 KJ/mol
correct me if I'm wrong
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24 Aug 2008 23:05:42 IST
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good reasoning Gaurav.
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MKG
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