Questions asked by frank

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• A sample of NaCl weighing 0.2286g is dissolved in H2O and exactly 50.0mL of silver nitrate solution is added to precipitate AgCl. The excess Ag+ is titrated with 12.55mL of 0.0986N solution of KSCN. What is the normality of the AgNO3 solution?
  
• For a chemical reaction the activation energy for the forward reaction is +155kJ, and the backward reaction is +171kJ. What is the overall energy for the forward reaction?