Identical heat lamps are arranged to shine on two identical containers, one containing water and one methanol (wood alcohol), so that each liquid absorbs the same amount of energy minute by minute. The covalent bonds of methanol molecules are nonpolar, so there are no hydrogen bonds among methanol molecules. Which of the following graphs correctly describes what will happen to the temperature of the water and the methanol?

Temperature of the both liquids will rise with the exposure to the heat lamps, but the temperature of methanol will rise sharply hence its graph will be more steeper than water.

Because, Water will be requiring more energy to overcome/break its hydrogen bonds before its temperature is elevated. Hence the water temperature will rise slowly showing a less steeper rise in graphical expression.

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proz proz · Answer 2 · 2021-09-05T12:25:05+02:00

I found the accompanying image to this question after a brief search, and from the image the correct answer is A.

When the two liquids are exposed to the heat from the lamps, the temperature of the liquids rise and the pattern and extent of temperature change are determined by the intermolecular forces holding the molecules of both liquids together. In order to study how the temperature changes with the constant exposure of the liquids to the heat source, a graph of time (on the x-axis) is plotted against the change in temperature (y-axis).

Methanol has non-polar and comparatively weaker bonds compared to water which has hydrogen bonds, hence it will take more heat to cause a change in the temperature in water than it would in methanol. This is correctly depicted in image A where the graph of water is less steep (close to the x-axis) than the graph of the temperature change in methanol, because between 0 and 20 minutes, there is a greater change in temperature in methanol which has weaker bonds than water which has stronger intermolecular bonds. How the heat interacts with the different liquids is this: The heat causes vibrations of the molecules and the longer the exposure, the more the vibration, it gets to a point where the intermolecular forces break loose releasing the molecules hence causing a rise in temperature, therefore the molecule with the stronger intermolecular bond more time to be broken leading to a temperature change.

More information on intermolecular forces can be found here: https://brainly.com/question/16103172