Questions asked by Alippiun

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• A buffer solution is prepared by mixing 1.0 mole of HA and 1.0 mole of NaA into 1.0 L distilled water. Calculate the change in pH when 25.0 mL of 0.20 M NaOH is added into 500 mL of the buffer? Given Ka(HA) is 1.75×10^(-5) M
  
• What is the chemical test used to distinguished CH3CONH2 ( primary amide) and CH3CH2NH2 ( primary amine), and what are their chemical equation and observation?
  
• Can tyrosine form dianionic form since it has acidic carboxyl group and also hydroxyl group at the phenyl group?