midterm 1 #9

midterm 1 #9 - so just add them up!...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Hi again, i think some ppl wanted to see the work for #9 but we didn't get to. .. so here's how the problem is worked out. .. the only sign you have to change is the delta H BaO(s)= -554kJ*mol-1 this is the delta H for BaO(g)--> BaO(s) but we want the opposite reaction which is BaO(s)-->BaO(g) so we have to change the sign to +. all the other given values have CORRECT sign.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: so just add them up! 180+249+554+502+966-141+844=3154=delta HL although EA can be either - or +, depending on the situation (look at study guide in the solutions manual) i think imma go sleep now =) cya tmr~ jamie---------------------------------Ahhh. ..imagining that irresistible "new car" smell? Check outnew cars at Yahoo! Autos....
View Full Document

Ask a homework question - tutors are online