Chemistry

A 5.0-g Sample of KBr at 25.0 degrees celsius dissolves 25.0 mL of water also at 25.0 degrees celsius. The final equilibrium temperature of the resulting soltution is 18.1 degrees celsius. What is the enthalpy of of solution in kilojoules per mole of KBr?

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  1. q H2O = mass H2O x specific heat H2O x (Tfinal-Tinitial)
    delta H/gram = q/5.0g
    delta H/mol = (q/5.0g) x (molar mass KBr/mol) = ?

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