Why is 22.4 liters called the molar volume of a gas?

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

34
Feb 11, 2018

The Molar Volume of an ideal gas at STP, which we define to be #0^@ "C"# and #"1 atm"# arbitrarily (because we're old-fashioned and stuck in 1982) is #"22.411 L/mol"#.

To calculate this we can use the Ideal gas law of #PV=nRT#

At STP (Standard Temperature and Pressure), we CHOSE:
#P = "1 atm"#
#V = ?#
#n = "1 mol"#
#R = "0.082057 L"cdot"atm/mol"cdot"K"#
#"T = 273.15 K"#

#V = (nRT)/P#

#= (1 cancel("mol")) (0.082057 (cancel("atm")cdot"L")/(cancel("mol")cdotcancel("K")))(273.15cancel("K"))/(1 cancel("atm"))#

#=# #"22.411 L"#

This is the volume of one mole of ideal gas at STP, in 1982 or before...

Was this helpful? Let the contributor know!
1500
Impact of this question
24195 views around the world
You can reuse this answer
Creative Commons License