Question

A sample of nitrogen gas at 23°C and 785 mmHg occupies 3.84 mL. What is the volume, in mL, of the gas at STP?

Answer 1

Solution:

$\frac {P_1 V_1} {T_1} = \frac {P_2 V_2} {T_2}$

$V_2=\frac {P_1 V_1 T_2} {P_2 T_1}$

$V_2=\frac {785 (mmHg) \times 3.84 (mL) \times 273 (K)} {760 (mmHg) \times 298 (K)}$

$V_2= 3.63 (mL)$

Answer:3.63 mL