[CHM 111 Lab] Error in Thermochemistry Prelab

[Andrew J. Pounds]

Hey -- while reviewing your submissions for the thermochemistry prelab I
found an error in the equation.  Apparently in the second part of the
lab a factor of 1/2 got dropped.

The correct way to calculate the enthalpy for the reaction is

factor = molar mass of NaOH / mass of NaOH added

enthalpy  = -((mass of diluted HCl solution in grams + grams of NaOH
added) *  4.02 J/(degree gram) * temp change ) * factor

Don't worry -- I will correct the point total for that one.  Just make
sure you do it correctly for you lab report.

-- 
Andrew J. Pounds, Ph.D.  (pounds at theochem.mercer.edu)
Associate Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627