Multiple Choice
At standard temperature and pressure (STP), which of the following samples of matter has the greatest average distance between its molecules?
76
views
7. Gases
Standard Temperature and Pressure
Multiple Choice
Which of the following correctly defines standard temperature and pressure (STP) in chemistry?
A
273 K and 1 atm
B
0°C and 1 atm
C
0°C and 760 mmHg
D
25°C and 1 atm
Verified step by step guidance1
Understand that Standard Temperature and Pressure (STP) is a set of conditions commonly used in chemistry to define a reference point for experiments and calculations involving gases.
Recall that temperature at STP is defined as 0 degrees Celsius, which is equivalent to 273 K (Kelvin). This is important because Kelvin is the SI unit for temperature in gas law calculations.
Recognize that pressure at STP is defined as 1 atmosphere (atm), which is the average atmospheric pressure at sea level.
Note that other units like 760 mmHg are equivalent to 1 atm, but the standard definition of STP uses atm for pressure and Kelvin for temperature.
Conclude that the correct definition of STP in chemistry is 273 K (0°C) and 1 atm pressure.
Related Videos
Related Practice
