Suppose you have two colorless molecular liquids, one boiling at - 84 °C, the other at 34 °C, and both at atmospheric 6 pressure. Which of the following statements is correct? For each statement that is not correct, modify the statement so that it is correct. (e) At - 84 °C both liquids have vapor pressures of 760 mm Hg.

Video transcript

Hey everyone we're asked to consider to pure liquids. The first one has a boiling point of negative 66°C and the other one has a boiling point of 38°C, both at four atmospheric pressure identified. The following statement is correct if not modify the statement to make it correct. And our statement is the vapor pressure of both liquids at 38°C is one atmospheric pressure. To answer this question, We need to recall that at our boiling point. Our vapor pressure is equivalent to our atmospheric pressure. So looking at our statement, our statement will be incorrect and our correct statement is actually going to be D. The vapor pressure of both liquids at their boiling points is for atmospheric pressure because that is exactly what was stated in our question stem. And we know that at our boiling point are vapor pressure is equivalent to our atmospheric pressure. Now, I hope that made sense. And let us know if you have any questions.