Hess's Law answers

IB Chemistry: Hess's Law answers

Answers to Hess"s Law questions 1. 2C(s) + 3H2(g) → C2H6(g)By Hess’s Law(2 x -394) + (3 x -286) = ΔH+ (-1560)ΔHf(C2H6) = – 86 kJ mol-12. a)By Hess"s Law(4 x -394) + (5 x -286) = ΔH+ (-2877)ΔHf(C4H10) = – 129 kJ mol-1b)3.By Hess"s LawΔH= - 1676 – (– 825.5) = – 851 kJ mol-1Amount of aluminium = 20.0 / 26.92 = 0.743 mol


To access the entire contents of this site, you need to log in or subscribe to it..

Click the free stuff button on the home page to access free pages or check the blog (which is also free).

All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.