Thermodynamic Equations

Question 1

What is the formula for thermodynamic Equalibrium

Answer 1

Ta=Tb=Tc

Question 2

What is the Formula for Amount Of Substance (AOS)

Answer 2

Amount of substance (mol) = concentration(mol/m^3) x volume

Question 3

What is the formula for Specific volume

Answer 3

v (Specific volume) = Vt(total volume) / n(no. of moles)

Question 4

What is the molar volume

Answer 4

v (molar volume) = Vt(Total volume) / n (mol)

Question 5

Formula for Work done

Answer 5

Work done = Force x distance
W= F x d

Question 6

What is the formula for Molar mass

Answer 6

molar mass (g/mol) = mass / no. of moles (mol)
M = m/n

Question 7

What is the formula for Temperature in Kelvin

Answer 7

Temp in kelvin = temp in celsius + 273.15
T(k) = T(c) +273.5

Question 8

What is the Formula for Force

Answer 8

Force = mass x acceleration
F= m x a

Question 9

What is the formula for Pressure

Answer 9

Pressure = Force/ Area
P= F/A

Question 10

What is the Formula for Weight

Answer 10

Weight = mass x gravity
Weight= m x g

Question 11

What is the formula for power

Answer 11

Power = Energy transferred / time taken OR Work done / time taken

P = E/t OR P = W/t

Question 12

What is the derivation for the amount of work

Answer 12

F = P x A
dW = F x dx
dW = P x A dx
dx = d (V/A)
dW = P x A x d(V/A)
Therfore the first answer is the intergral of Pdv from v1 to v2 where v2 is initial volume and v2 is final volume.

Question 13

What is the sign decision for the intigral for amount of work

Answer 13

If work is done on the system, integral is postiive
If work is done by the system, sign is negative.

Question 14

Formula for Kinetic Energy

Answer 14

Ek = 1/2 M x v^2
Kinetic energy = half times mass times verlocity squared

Question 15

What is the formula for Finite change in velocity

Answer 15

W = m(velocity 2 squared over two - velocity 1 squared over two)
W = m((v2)^2/2 - (v1)^2/2)

Question 16

What is the formula for Potential Energy

Answer 16

Potential energy = mass x acceleration due to gravity x distance( height)
Ep = m x g x Z

Question 17

What is ƒormula for work with respect to Ep

Answer 17

Work done is the change in Potential Energy
W = ∆Ep

Question 18

What is the formula for the 1st law of thermodynamics

Answer 18

∆Energy of system + ∆ energy of surroundings = 0

Question 19

What is the formula for Energy of the system

Answer 19

∆ (u + Ek + Ep) = Q x W
∆ Internal energy + kinetic energy + potential energy = heat + work done.

Question 20

What is the first Formula for total internal energy

Answer 20

Total internal energy = mass x specific internal energy
Ut = m x U

Question 21

What is the second formula for total internal energy
Ut = m x U

Answer 21

Total internal energy = total number of moles x molar internal energy
Ut = n x U

Question 22

What is the integrated formula for Specific internal energy

Answer 22

m∆u = Q + W
mass times the change in internal energy = heat + work done

Question 23

What is the integrated formula for molar internal energy

Answer 23

n∆U = Q+w
No. of moles times the change in internal energy = heat + work done