Calculate the change of volume from volume expansion coefficient

[Outrageous]

β= (1/v)(∂v/∂T)constant pressure.
What is the v represent? molar volume?
If I am given the β and the change of temperature, how to calculate the change of volume? or it is not enough information to calculate it?

Thank you.

 

[jedishrfu]

it seems like you have enough if the change is relatively small so that you could use deltas:

beta * delta T * V =delta V

You'd have to decide on what relatively small means and you have to know what V is.

 

[Outrageous]

Thank you
Question : a container is filled with mercury at 0 degree celsius. At temperature 50 degree celsius , what is the volume of mercury that will spill out ?
β Of mercury is 18*10^(-5) /celsius

Is this possible to do ?

 

[jedishrfu]

Thank you
Question : a container is filled with mercury at 0 degree celsius. At temperature 50 degree celsius , what is the volume of mercury that will spill out ?
β Of mercury is 18*10^(-5) /celsius

Is this possible to do ?

What do you think? A delta of 50 degrees is pretty significant.

What is the initial volume?

 

[Outrageous]

The initial volume is not given , so that question can't be solved?

 

[Chestermiller]

β= (1/v)(∂v/∂T)constant pressure.
What is the v represent? molar volume?
If I am given the β and the change of temperature, how to calculate the change of volume? or it is not enough information to calculate it?

Thank you.

Rewriting your equation:

\frac{d\ln{v}}{dt}=\beta

Integrating, you get:

v=v_0\exp(\beta(T - T_0))

where v₀ is the volume at temperature T₀.