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Unformatted text preview: left. 76A) a) When a small amount of acid is added, the reaction will shift towards the left (the formation of reactants is favoured). When the acid dissociates the H 3 O + generated will be neutralized by the buffer. In general buffers resist change. The hydrogen ion will be used to create more H 2 PO 4-. This will cause the pH to say relatively the same because the concentration of H + is very negligible because it is so small. b) When a small amount of base is added, the reaction will shift towards the right (the formation of products will be favoured). When the base becomes dissociated, the hydroxide ions (OH-) will be used up in the reaction to create more HPO 4 2-, therefore the blood is neutralized and the pH remains the same....
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- Spring '09