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tricks to easily learn all formulas of physical chemistry
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Physical Chemistry Formula RevisionPhoto Elctric Effect
Basic Concepts Nox
Normality, N= Heb = 1000
E KEman
Y(I) Es xy (m)) E b kEman
E
= +
⑧
B
atomic
Average mass a,, +ac+ ass... E eVo+mYman
=
= B
B
2
108 ↓
a,, atomic mass
of isotopes
a2,as....
-
OS
parts per million,
kbx
n,, my, .....
-
percentage abundance ppm
= A
kE
More concept ........to
x
no. of moles, n=
givenmass w
=
Molality, m 4b
= =
W 1000
x
molar mass N
Wa(Rg) Mb xWa(y)
De
Broglie's Hypothesis
mc2 1 X H
=
x
ofparticles
=
fraction,
=
no.
n =
N
=
Mole Xa Mb
=
mx
2m K.E
No.
Avogadro's 6.022 x 1023
Ma+Up+ nc.....
Bohn's Atomic model
vol
ofgas X
stoichiometry mx2 nh v 0.53
x2
A
=
n
= = =
-
2X
22.4 A
vol STP
at
of gas aA +
bB C x 2.18 x
= 10" m/s
"Zo TE
PI
= KE
=
E = -
13.6 x
-
ConcentrationTerms ofB
mokes
moles
of of
moles
A =
=
R 11x107m+
R,2
[
a
I
=
=
Percentage," N or Ys x 100
=
W or X limiting Rg: given amt. lowest man no.
ofspectral lines when e-returns from
Me to
n,: (42 n)(n2 4, 1)
+
2
stoichiometric
- -
coeff.
Molarity, M= 4 kb
=
X1000
Atomic Structure Heisenberg's Uncertainity Principle:An. xP>, x
-(1) My x x (m))
Quantum Model
Angular momentum
Plank's Quantum Theory total nodes =
n- l Orbital 1(+
=
1)h 2x
angular nodes 1 =
Spin s(s+1)h =
2x
E hc E(ev) 12400
=
=
X (A-
radial nodes n-1-l
X
=
, Thermodynamic Process
enclosed
For isothermal c 2 For
cyclic:W= area
=
AP 0 =
is othermal DT 0 =
For adiabetic c 0
&
=
*T
P
=
0
# isochoric AV 0 =
9
0
=
isobaric AP 0 = CX Cp 2
adiabatic 90 =
monoatomic 3R/25R/25/3
triatomic
di
Clinear)
5R/2 FR 715 Relation blu IH and AU
A
A
A - B *B
A triatomic 3R 4R
4/3 Xu
qp k
8. =
= +
P
(non-linear)
I
AU= PDV
ap
-
B B
PDX
·
Du
=
qp
+
- Y
AH AV+PDX
=
Work Done dW Pe.dX DU+
*H
ANgRT
=
=
-
Ist law ofThermodynamics
AW w
q t
For
For
Isobaric:W
isochoric:N
=
0
-nRDT
Entropy
q
=
+
=
w
w
System - DS =
9 rex
q
-
For is other mal:
Wrex = 2.3nRT log (Y= Y1) As
n(y(n)Tzπ,)
=
nR
+
(n(vz(Y)
Heat Capacity q
2 AT =2.3 nRT
log(Pc/P)
Nir=-Pe (Ye-Y,) xS
n(p(n)Tz/T) nR(n(a/i)
=
+
c =
q(T (m q(nxTc a)mx+
= =
For adiabatic:
2nd
Gei,PX) ofThermodynamics
cp: 'm at const.P Cy:cmat const.x Wrex= law
-H
nCpDT DU nCybT
= =
Note:Cp-Cy R
=
Nir=(PY2-P, X1) ↳.S
unix ,0
-
1
v
Poisson's ratio U:Cp (
n(yAT PAX =
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