Important Chemistry Formulas for NEET 2023

By Team Aakash Byju's | 18th December 2022

In this post, we have provided important chemistry formulas required for NEET in a simple format.

Chemical Equilibrium Formulas

K   or K

=

c

eq

m

m

[A]  [B]

x

y

[C] [D]

Law of Chemical Equilibrium or Mass Action:

Equilibrium Constant in terms of Partial Pressure and Mole Fraction:

K

=

p

m

1

2

p

C

P

D

m

p

P

A

B

n

n

2

1

K

x

=

X    X

C

D

c

d

X    X

A

B

a

b

Chemical Equilibrium Formulas

Thermodynamics of Equilibrium:

In

2

1

K

K

=

H

R

0

(

)

(

1

T

1

-

1

T

2

)

Δ

Chemical Equilibrium Formulas

Chemical Bonding Formula

Hf

Δ

=

H(Sublimation)

Δ

+

I.E

+

H(Dissociation)

Δ

+

E.A

+

Lattice Energy.

 Hess law:

+

L.E =

(

)

120200

r

γ

|Z ||Z |

-

1 -

34.5

r

KJ/mol

Chemical Bonding Formula

Kapustinskii Equation:

Electrochemistry Formulas

E

=

0

cell

E

0

cell

[

Standard Reduction  Potential of Cathode

]

-

[

Standard Oxidation  Potential of Anode

]

=

E

0

Cathode

-

E

0

Anode

=

E

0

Right

-

E

0

Left

EMF of a Cell:

Nernst Equation:

E

=

0

0.0591

log

E

-

n

1

[M        ]

n+

(aq)

Electrochemistry Formulas

Kohlrausch Law:

Δ

m

=

X*

Δ

Cation

Y*

Δ

Anion

+

Ionic Equilibrium Formulas

K

=

[AB]

+

[A ]  [B ]

-

α

=

C

α

C

.

C

(1 -   )

α

K

=

C

α

2

1 -  

α

Ostwald Dilution Law:

pH scale:

pH = - log  [H ]

+

10

(or)

pH = log

1

  [H ]

+

10

Ionic Equilibrium Formulas

Solution and Colligative Properties Formulas

Concentration =

Quantity of Solute

Volume of Solution

Concentration of Solution:

Osmotic Pressure:

Osmotic Pressure,

= iMRT

π

Some more important ones are Reduction Formula, Polymers Formula, Oxidation Reaction Formula, Nomenclature Formula, Grignard Reagent Formula and  D Block Elements Formula.