Answer to Question #233152 in Inorganic Chemistry for chris

Question

obtain the  ΔH° of the following:

1. Zn(s) + 2H+(aq) → Zn2+(aq) + H2(g)

Answer 1

ΔH=ΔE+PΔV

or ΔE=ΔH−PΔV

PΔV=1 atm×22.4 L=22.4 L atm

=22.4×101.3 J=2307 J=2.31 kJ

∴ΔE=−154.4−2.31=−156.71 kJ