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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: zeoblade on August 15, 2009, 09:50:17 AM

Title: Heat of Ammonia Neutralization
Post by: zeoblade on August 15, 2009, 09:50:17 AM

I'm trying to find some theoretical values from literature for the neutralization of ammonia with HCl to compare with what I determined experimentally in the lab to be -64.3526kJ/mol to see how large an error I have so I can improve my manual lab skills. But I'm not sure how to work it out the long way from tables of heats of formation of the products and reactants in:

NH₃ + H₂O --> NH₄⁺ + OH^-

OH_- + HCl --> H₂O + Cl^-

NH₃ + HCl --> NH₄⁺ + Cl^-

Does anyone know the target value or can jolt my memory how to work it out theoretically?

zeoblade@hotmail.com