Homework Help: Chemistry

Posted by Lydia on Sunday, November 18, 2012 at 1:45pm.

A reaction is peformed in which 50 ml of .400M silver nitrate and 75 ml of .100M hydrochloric acid are mixed together. The initial temperature of the solutionn was 25 C and the final temperature was 27.2 C. What is the enthalpy, in kj/mol, for the formation of the precipitate (silver chloride)? The volume of the final solution was 125 ml, and it had the density of 1.00g/ml. The specific heat of solution is 4.18 J/g*C.

Chemistry - DrBob222, Monday, November 19, 2012 at 12:34am
q = heat generated = [mass H2O x specific heat H2O x (Tfinal-Tinitial)]

That gives you delta H for the reaction.
q/mol AgCl = delta H/mol
Note: It appears HCl is the limiting reagent.

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