. Which of the following substances has (under normal conditions) the largest temperature range
as a liquid?
A) NH3
B) CH3OH
C) H2O
D) CH4
E) C2H6
To determine which substance has the largest temperature range as a liquid, we need to know their boiling and melting points. The substance with the largest temperature range will have the greatest difference between its boiling and melting points.
To find this information, you can refer to a reliable source or lookup each substance individually.
A) NH3 (Ammonia): Its boiling point is -33.34°C, and its melting point is -77.74°C. The temperature range is (boiling point - melting point) (-33.34 - (-77.74)) = 44.4°C.
B) CH3OH (Methanol): Its boiling point is 64.7°C, and its melting point is -97.6°C. The temperature range is (boiling point - melting point) (64.7 - (-97.6)) = 162.3°C.
C) H2O (Water): Its boiling point is 100°C, and its melting point is 0°C. The temperature range is (boiling point - melting point) (100 - 0) = 100°C.
D) CH4 (Methane): Its boiling point is -161.5°C, and its melting point is -182.5°C. The temperature range is (boiling point - melting point) (-161.5 - (-182.5)) = 21°C.
E) C2H6 (Ethane): Its boiling point is -88.6°C, and its melting point is -182.8°C. The temperature range is (boiling point - melting point) (-88.6 - (-182.8)) = 94.2°C.
Comparing the temperature ranges, we can see that CH3OH (Methanol) has the largest temperature range as a liquid, with a range of 162.3°C. Therefore, the correct answer is B) CH3OH.