Question #c4606

1 Answer

24 L

Explanation:

NIST uses a temperature of 20C (293.15 K, 68F) and an absolute pressure of 1 atm (14.696 psi, 101.325 kPa). This standard is also called normal temperature and pressure (abbreviated as NTP).

Normal Temperature and Pressure

T = 293.15K
P=1atm

so

The only difference between STP and NTP is that NTP conditions are at 20C=293.15 K, rather than at 0C=273.15 K.

Since only the temperature is different, use Charle's Law:

V1T1=V2T2

We have:

V1=22.41L

T1=273.15K

V2=?This is the volume of 1 mol of a gas at NTP

T2=293.15K.

Plugging our information into Charle's Law:

V1T1=V2T2

22.41L273.15K=V2293.15K

V2=(22.41L)293.15K273.15K=24.05L

Therefore, 1 mol of any gas will occupy about 24 L at NTP.

Hope this helped