Thermochemistry Flashcards
1
Q
What is the study of energy changes that occur during chemical reactions?
A
thermochemistry
2
Q
Thermal energy is an ex of _______
A
kinetic energy
3
Q
What is the first law of thermodynamics?
A
energy can not be created or destroyed only transformed
4
Q
What is internal energy?
A
ΔE
5
Q
q=
A
heat
6
Q
w=
A
work
7
Q
An endothermic process has …
A
+E and +q
8
Q
An exothermic process has ….
A
=E and -q
9
Q
work/w=
A
PΔV
10
Q
+w is (+p)
A
compression
11
Q
-w is (-p)
A
expansion
12
Q
What is total energy?
A
ΔH
13
Q
H=E+PV
A
Total energy
14
Q
Coffee cup calorimetry has …
A
constant pressure
15
Q
eqn for calorimety is
A
q=msΔT
16
Q
if change in T for cal is +
A
rxn q is -
17
Q
qrxn=
A
-qcal/soln
18
Q
A bomb calorimeter has …
A
constant volume
19
Q
for bomb calorimetry use the eqn
A
q=sΔT
20
Q
more complex molecule/ system has _________ heat capacity
A
higher
