Thermo + Bonding Flashcards
1
Q
What is mean bond enthalpy
A
Then enthalpy change to break 1 mol of bond
averaged over a range of compounds
2
Q
how to calculate bonding breaking to forming
A
bond breaking (r) - bond forming (p)
3
Q
why expect enthalpy of combustion is different to actual
A
there is a slight difference between the actual bond enthalpies and mean bond enthalpies
4
Q
Describe the process of electrospray ionisation
State the equation of sample P
A
The sample is dissolved in a volatile solution
A needle is injected at high voltage
The sample gains a proton
P + H+ ——–> PH+