# Concentration, Saturation and Vapor Loss of a Gas in Tank

Hello:

We are to assume a 129 m3 closed tank.

The tank previously contained heptane and therefore has residual vapor.

The vapor pressure is given and known as 40 mm Hg

The temperature is given as 25 degrees C.

1) Is there a way to determine what the residual concentration of heptane gas would be in this closed container?

2) Would you assume that the total enclosed container space was 100% saturated with heptane?

3) If a hole was drilled in the top of the tank, how would one calculate the vapor loss at stated pressure and temp?

Thank you so much.

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#### Solution Preview

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Answer to 510011

Q. How to determine the emission loss from a tank with a known gas or liquid

Hello:

We are to assume a 129 m3 closed tank.

The tank previously contained heptane and therefore has residual vapor.

The vapor pressure is given and known as 40 mm Hg

The temperature is given as 25 degrees C.

1) Is there a way to determine what the residual concentration of heptane gas would be in this closed container?

2) Would you assume that the total enclosed container space was 100% saturated with heptane?

3) If a hole was drilled in the top of the tank, how would one calculate the vapor loss at stated pressure and temp?

Thank you so ...

#### Solution Summary

This solution deduces the answers to a 3-part numerical problem, in a step-wise manner, with special attention to units and formula related to gas behavior.