use the observation in the first column to answer the question in the second column. | observation | question | |--|--|--| | at 1 atm pressure, substance a boils at 39. $^{circ}c$ and substance b boils at 64. $^{circ}c$. | which has a higher vapor pressure?
substance a
substance b
neither, a and b have the same vapor pressure.
its impossible to know without more information. | | the enthalpy of vaporization of substance c is smaller than that of substance d. | which has the higher boiling point?
substance c
substance d
neither, c and d have the same boiling point.
its impossible to know without more information. | | at 71 $^{circ}c$, substance e has a vapor pressure of 123. torr and substance f has a vapor pressure of 103. torr. | which has a higher enthalpy of vaporization?
substance e
substance f
neither, e and f have the same enthalpy of vaporization.
its impossible to know without more information. |

Question

Accepted Answer

# Explanation:
## Step1: Recall boiling - point and vapor - pressure relationship
Substances with lower boiling points have higher vapor pressures at a given temperature. Since Substance A boils at 39 °C and Substance B boils at 64 °C, Substance A has a higher vapor pressure.
## Step2: Recall enthalpy of vaporization and boiling - point relationship
A higher enthalpy of vaporization generally means a higher boiling point. Since the enthalpy of vaporization of Substance C is smaller than that of Substance D, Substance D has a higher boiling point.
## Step3: Recall vapor - pressure and enthalpy of vaporization relationship
Substances with lower vapor pressures at a given temperature have higher enthalpies of vaporization. Since Substance F has a lower vapor pressure (103 torr) than Substance E (123 torr) at 71 °C, Substance F has a higher enthalpy of vaporization.
# Answer:
1. Substance A
2. Substance D
3. Substance F

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Step1: Recall boiling - point and vapor - pressure relationship

Step2: Recall enthalpy of vaporization and boiling - point relationship

Step3: Recall vapor - pressure and enthalpy of vaporization relationship

Answer:

observation	question
the enthalpy of vaporization of substance c is smaller than that of substance d.	which has the higher boiling point?<br>substance c<br>substance d<br>neither, c and d have the same boiling point.<br>its impossible to know without more information.
at 71 $^{circ}c$, substance e has a vapor pressure of 123. torr and substance f has a vapor pressure of 103. torr.	which has a higher enthalpy of vaporization?<br>substance e<br>substance f<br>neither, e and f have the same enthalpy of vaporization.<br>its impossible to know without more information.