Answer
We would expect to find methane as a liquid.
Work Step by Step
We are told that, on Titan, pressure is around 1.6 atmospheres and the temperature is about -178 degrees Celcius. Knowing this, we plot this point on Figure 11.30. Plotting this point, we find that the point lies in the blue area of the graph, indicating that methane should be expected to be found as a liquid.
