During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. What is the ratio of specific heats for the gas?
a) 1.67
b) 1.50
c) 1.40
d) 1.33

Respuesta :

Answer:

d) 1.33

Explanation:
For an adiabatic process, the relationship between pressure (P) and temperature (T) can be expressed as:

P is proportional to T cubed.

According to the relationship between pressure (P) and temperature (T) in an adiabatic process:

P V raised to the power of γ = constant

Where γ is the ratio of specific heats (also denoted as γ = C sub p / C sub v).

From the given information, since P is proportional to T cubed, we can write:

P = kT cubed

Where k is a constant.

P divided by T squared = kT squared

P divided by T squared = kT

Comparing with P V raised to the power of γ = constant, we see that:

γ equals P divided by T squared equals 2

Thus, the ratio of specific heats for the gas is 1.33.