교과서 질문
Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of Cl2 gas is 8.70 L at 895 torr and 24°C. b. What volume will the Cl2 occupy at STP?
7. Gases
Standard Temperature and Pressure
객관식
Which of the following best describes the volume occupied by 1 mol of an ideal gas at standard temperature and pressure (STP)?
A
22.4 L
B
0.0821 L
C
1.0 L
D
273 L
검증된 단계별 안내1
Recall that standard temperature and pressure (STP) is defined as a temperature of 0°C (273 K) and a pressure of 1 atm.
Understand that 1 mole of an ideal gas at STP occupies a specific volume, which can be derived from the Ideal Gas Law: \(P \times V = n \times R \times T\).
Write down the Ideal Gas Law formula with the known values: \(P = 1\) atm, \(n = 1\) mol, \(R = 0.0821\) L·atm/(mol·K), and \(T = 273\) K.
Rearrange the Ideal Gas Law to solve for volume \(V\): \(V = \frac{n \times R \times T}{P}\).
Substitute the known values into the equation to find the volume occupied by 1 mole of an ideal gas at STP, which will give you the volume closest to one of the provided options.
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