Question

What are standard temperature and pressure conditions for gases?

• A. $0°\mathrm{C}\mathrm{and}0\mathrm{torr}$
• B. 0K and 760torr
• C. $273°\mathrm{C}\mathrm{and}1\mathrm{atm}$
• D. $0°\mathrm{C}\mathrm{and}760\mathrm{torr}$

Answer 1

The correct option is D

$0°\mathrm{C}\mathrm{and}760\mathrm{torr}$

• Standard temperature is calculated in kelvin which is 273K$\left(0°\mathrm{C}\right)$ and pressure in atm which is 1atm$\left(760\mathrm{torr}\right)$.
• Other than kelvin the temperature has other units also which are as follows:
• $$\begin{gathered} 0°\mathrm{C}=273\mathrm{K} \\ \mathrm{Temperature}\mathrm{in}\mathrm{kelvin}=273+°\mathrm{C} \end{gathered}$$
• $°\mathrm{C}=\frac{5}{9}\left(\mathrm{F}-32\right)$
• Other than atm pressure has also other units which are as follows:
• $1\mathrm{atm}=76\mathrm{cm}=760\mathrm{mm}\mathrm{or}760\mathrm{torr}$
• $$\begin{gathered} 1\mathrm{atm}=1.01325\mathrm{bar}\mathrm{or}1\mathrm{bar}=0.987\mathrm{atm} \\ 1\mathrm{Pa}=1\mathrm{N}/{\mathrm{m}}^2=1\mathrm{Kg}/{\mathrm{ms}}^2 \end{gathered}$$