Multiple Choice
Which of the following best describes the volume occupied by 1 mol of an ideal gas at standard temperature and pressure (STP)?
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7. Gases
Standard Temperature and Pressure
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Which of the following sets of values correctly describes standard temperature and pressure (STP)?
A
0°C and 1 atm
B
25°C and 1 atm
C
0°C and 760 mmHg
D
273 K and 1 atm
Verified step by step guidance1
Understand that standard temperature and pressure (STP) is a set of conditions commonly used as a reference in chemistry, especially for gases.
Recall that the standard temperature at STP is 0°C, which can also be expressed as 273 K (using the conversion formula \(\text{K} = \degree C + 273\)).
Recognize that the standard pressure at STP is 1 atmosphere (atm), which is equivalent to 760 mmHg (millimeters of mercury).
Note that both temperature units (0°C or 273 K) and pressure units (1 atm or 760 mmHg) are acceptable ways to describe STP, as they represent the same physical conditions.
Therefore, the correct sets of values describing STP are: 0°C and 1 atm, 0°C and 760 mmHg, and 273 K and 1 atm.
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