A substance has a sea level boiling point of 78°C. You take the substance about 3,000 meters up a mountain and heat it in a pot. What would be the most likely boiling point for this substance at that elevation: 68°C, 78°C, 95°C, or 100°C? Explain.

In this case, since the relationship between the altitude and the boiling point is inversely proportional due to fact that the higher the altitude the lower the atmospheric pressure and therefore the lower the boiling point (temperature) and the lower the altitude the higher the atmospheric pressure and therefore the higher the boiling point. This is supported by the fact that at lower atmospheric pressures, more liquid molecules are likely to become gas since a weaker force is holding them together in liquid state and the other way around.

Therefore, the most likely boiling point at 3,000 m up a mountain will be below 78 °C, it means 68 °C.

Best regards.

Lanuel Lanuel · Answer 2 · 2021-11-25T18:11:58+01:00

The most likely boiling point for this substance at an elevation of 3,000 meters up a mountain is: A. 68°C.

Given the following data:

Boiling point at sea level = 78°C

Altitude = 3,000 meters

To determine the most likely boiling point for this substance at that elevation:

Boiling point can be defined as the temperature at which a physical matter changes phase or state, especially from liquid to gas.

The boiling point of a substance is inversely proportional to altitude due to the effect of atmospheric pressure.

This ultimately implies that, the higher the altitude, the lower the boiling point and the lower the altitude, the higher the boiling point.

In this context, the boiling point of a substance at higher altitude such as on a mountain is lower because there is less atmospheric pressure acting on its molecules.

Deductively, the most likely boiling point for this substance at an elevation of 3,000 meters up a mountain would be less than 78°C.

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