Multiple Choice
A sample of dichloromethane gas (CH2Cl2) occupies 32.6 L at 310 K and 5.30 atm. Determine its volume at STP?
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7. Gases
Standard Temperature and Pressure
Multiple Choice
When 1 mole of gas is placed under STP conditions, what is the volume?
A
0.000 L
B
1.00 L
C
24.5 L
D
22.4 L
E
not enough information
Verified step by step guidance1
Understand that STP (Standard Temperature and Pressure) conditions are defined as a temperature of 273.15 K (0°C) and a pressure of 1 atm.
Recall that under STP conditions, 1 mole of an ideal gas occupies a specific volume known as the molar volume.
The molar volume of an ideal gas at STP is 22.4 liters. This is a standard value derived from the ideal gas law.
The ideal gas law is given by the equation: , where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature.
By substituting the values for STP conditions into the ideal gas law, you can verify that the volume occupied by 1 mole of gas is indeed 22.4 L.
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