Enthelpy of Dissolution vs. Enthelpy of Solution

[Wailing Fungus]

What is the difference between enthalpy of dissolution and enthalpy of solution?

I have a lab where I have to measure the change in enthalpy of dissolution of several salts in water. I found the change in enthalpy, however I am supposed to compare them with the real values. I looked in the CRC handbook and there was only a table with changes in enthalpies of solution, these were different values than the ones I got.

Another thing that I do not undestand is that my reactions were endothermic but my enthalpies of dissolution were all negative. Doesn't enthalpy change indicate if a reaction is exothermic or endothermic? Unless enthalpy of dissolution indicates something else. I used the following equations:

q = CdT where C is the calorimeter constant

then

dH = q / n where dH is the change in enthalpy of dissolution

 

[Cesium]

Negative values indicate a release of energy and exothermicity. Enthalpy of solution and dissolution are the same thing- heat change when one mole of solute dissolves

 

[Wailing Fungus]

Are you serious?

 

[Cesium]

No I'm lying.

 

[Physics Monkey]

You shouldn't lie Cesium, it's probably against some policy here. Hehe.