Proving Using Ideal Gas Law That Molar Volume At NTP Is 22.4 Litres
Có thể bạn quan tâm
-
- Home
- Questions
- Tags
- Users
- Unanswered
- Teams
Ask questions, find answers and collaborate at work with Stack Overflow for Teams.
Explore Teams Create a free Team - Teams
-
Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Explore Teams
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Learn more about Teams Proving using ideal gas law that molar volume at NTP is 22.4 litres Ask Question Asked 7 years ago Modified 5 years ago Viewed 24k times 0 $\begingroup$The definition of NTP as given by IUPAC is
NTP – Normal Temperature and Pressure – is defined as air at $20\ ^\circ\mathrm C$ ($\pu{293.15 K}$, $\pu{68^{\circ}F}$) and $\pu{1 atm}$ ($\pu{101.325 kN/m2}$, $101.325\ \mathrm{kPa}$, $14.7\ \mathrm{psia}$, $0\ \mathrm{psig}$, $29.92\ \mathrm{inHg}$, $407\ \mathrm{in}\ce{H2O}$, $760\ \mathrm{Torr}$).
It is also known that volume occupied by $1$ mole of gas at NTP is $\pu{22.4 L}$.
My attempt at proving the above statement,
For $1$ mole, $PV=RT$
Substituting $P=\pu{1 atm}$, $T=\pu{293 K}$, $R=0.0821\ \mathrm{L\ atm\ K^{-1}\ mol^{-1}}$, we get $V=\pu{24.05 L}$ as the molar volume.
On putting $T=\pu{273 K}$ and $P=\pu{1 bar}$ (conditions of STP), we get $V=\pu{22.2 L}$
Therefore, molar volume at STP is $\pu{22.4L}$.
Why is the above calculation in NTP condition giving wrong results? How else to prove that molar volume at NTP is ${22.4\ \mathrm L}$?
Share Cite Improve this question Follow edited Jun 11, 2020 at 10:20![Arishta's user avatar](https://i.sstatic.net/gb018.jpg?s=64)
- $\begingroup$ see the whole article and the linked section in particular en.wikipedia.org/wiki/… $\endgroup$ – MaxW Commented Oct 6, 2017 at 15:56
1 Answer
Sorted by: Reset to default Highest score (default) Date modified (newest first) Date created (oldest first) 2 $\begingroup$The issue is that one mole of a gas at NTP should not be 22.4 L based on the ideal gas. This is only true for a gas at STP. The key difference between the two conditions is they are defined by different temperatures (STP is for 273 K while NTP is for 293 K).
They are also different in that the IUPAC now defines STP with respect to 1 bar while NTP is defined with respect to 1 atm.
See The Engineering ToolBox for more info.
Share Cite Improve this answer Follow edited Jun 20, 2019 at 13:37![andselisk's user avatar](https://i.sstatic.net/Kwqm6.png?s=64)
- 2 $\begingroup$ And to add further point, the pressure is one bar, not one atm. So at STP it would be more correctly $\pu{22.7L}$. $\endgroup$ – Pritt says Reinstate Monica Commented Jun 15, 2017 at 2:37
- $\begingroup$ @PrittBalagopal good point, I will make note of that explicitly. $\endgroup$ – Tyberius ♦ Commented Jun 15, 2017 at 2:54
- $\begingroup$ You should use 298K for NTP! $\endgroup$ – Vaibhav Dixit Commented Jun 15, 2017 at 8:15
- 1 $\begingroup$ @Vaibhav Dixit all the definitions I have seen for NTP define it at 20C or 293K. $\endgroup$ – Tyberius ♦ Commented Jun 15, 2017 at 19:52
Not the answer you're looking for? Browse other questions tagged
or ask your own question.- Featured on Meta
- Upcoming initiatives on Stack Overflow and across the Stack Exchange network...
- We spent a sprint addressing your requests — here’s how it went
Related
3 Forms of Henry's law versus ideal gas law 2 Ideal gas law? implied volume? 5 Using combined gas law to calculate the volume of dry hydrogen gas 2 Gas Stoichiometry & Ideal Gas Law 3 How to calculate molar mass using the ideal gas law? 8 Do 1 mole of both dioxygen gas and its atoms occupy 22.4 litres at STP? 48 What volume does one mole of an ideal gas occupy? 0 Antoine law and ideal gas lawHot Network Questions
- If katakana "ヘ" originated from part of the Kanji "部", why isn't it "⻏" instead?
- What is the difference, if any, between "gramogramme" and "abréviation phonétique"?
- Why the number of bits or bytes is different for a folder that has been copied between two external drives?
- Minimum number of select-all/copy/paste steps for a string containing n copies of the original
- 向こう as a pronoun ("he/she/they")?
- A manifold whose tangent space is a sum of line bundles and higher rank vector bundles
- What is the computational scaling of DFT energy vs gradient vs Hessian?
- Different letters, different grids
- Simulate slow disks in KVM to see effect of LVM cache in test setup
- How to POSIX-ly ignore "warning: command substitution: ignored null byte in input"?
- When do people say "Toiletten" in the plural?
- Why does the length of an antenna matter when electromagnetic waves propagate perpendicular to the antenna?
- Vakil's The Rising Sea Exercise 3.7.H (Version 2022)
- a question about silicon diode
- Other than approximating the total energy of the system, what other information does the Hartree-Fock method provide?
- 11 trees in 6 rows with 4 trees in each row
- Why is QR considered a problem for disc rotor alignment and not rim brake alignment?
- Rolling median of all K-length ranges
- What caused the builder to change plans midstream on this 1905 library in New England?
- ForeignFunctionLoad / RawMemoryAllocate and c-struct that includes an array
- When selling a machine with proprietary software that links against an LGPLv3 library, do I need to give the customer root access?
- Directions of puff pastry folds
- How can I export my Location History now that this data is only stored locally on the phone?
- Fill the grid subject to product, sum and knight move constraints
To subscribe to this RSS feed, copy and paste this URL into your RSS reader.
Từ khóa » Volume Of 1 Mole Gas At Ntp
-
20. What Is The Exact Volume Of Gas A NTP And STP And ... - Byju's
-
The Volume Of Mole Of A Perfect Gas At NTP Is - Toppr
-
The Volume Of 0.1 Mole Of Gas At NTP Is: - Toppr
-
How Much Volume Does One Mole Of Gas Occupy At NTP? - Vedantu
-
What Is The Molar Volume Of Ideal Gas At NTP And STP? - Quora
-
Volume Occupied By Molecules Of One Mole Gas At NTP, Each ...
-
[Solved] 1 Kmol Of Any Gas At N.T.P Occupies Volume Of
-
The Volume Of 1 Mole Of A Gas At NTP Is 20 Litres. - Doubtnut
-
One Mole Of An Ideal Gas At NTP Occupies 22.4 Liters ... - Doubtnut
-
One Mole Of An Ideal Gas At NTP Occupies 22.4 Liters ... - YouTube
-
Volume Occupied By Molecules Of One Mole Of A Gas At NTP , Each ...
-
What Is The Volume Of 1 Mole Of Gas At Ntp?
-
Q. One Gram Mole Of A Gas At NTP Occupies 22.4L. This Fact Was ...
-
One Mole Of An Ideal Gas At NTP Occupies 22.4 Liters (molar Volume