CHEM 1050 Lecture Notes - Lecture 5: Dihydrogen Cation, Joule
24 Sep 2016
School
Department
Course
Professor
Document Summary
Day 5: hess"s law go from gas to liquid = making more hydrogen bonds. What is the hreaction value when we burn one mole of ch4 and the product is h2o(l) (instead of h2o(g)) ** the number is the same number/magnitude, and when you reverse the reaction, it just changes the sign [i. e. 81 vs. -81] Hess"s law can measure the h of reactions that you can"t measure with a thermometer. H values are usually given in questions [hopefully] We make use of the concept of state functions to calculate h recall: depends on the amount of matter. Extensive" property i. e. it is not possible to measure heat of combustion of carbon to carbon monoxide c . Co2 but we know that heat of combustion of c co2 is -393 kj/mol and that combustion of co co2 is -283 kj/mol. Write out two combustion reactions then turn the reaction for co around so that co is the product.
