S swagswagyoloswag Member Joined Mar 13, 2015 Messages 100 Gender Male HSC 2015 Apr 25, 2015 #1 http://imgur.com/3XkMC2y Can someone explain this
Fizzy_Cyst Owner @ Sigma Science + Phys Goat Joined Jan 14, 2011 Messages 1,212 Location Parramatta, NSW Gender Male HSC 2001 Uni Grad 2005 Apr 25, 2015 #2 Salts are formed via neutralisation rxn: Acid + Base --> Salt + water Seeing as the salt is slightly basic, that means that the reactant base is stronger than the reactant acid. Therefore, HCN must be a weak acid in solution (I.e., answer is A) Alternatively, this about it in terms of conjugate acid/base pairs. If CN- is weakly basic, HCN must be weakly acidic. Last edited: Apr 25, 2015
Salts are formed via neutralisation rxn: Acid + Base --> Salt + water Seeing as the salt is slightly basic, that means that the reactant base is stronger than the reactant acid. Therefore, HCN must be a weak acid in solution (I.e., answer is A) Alternatively, this about it in terms of conjugate acid/base pairs. If CN- is weakly basic, HCN must be weakly acidic.