For helium gas

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

For helium gas, the van der Waals constant

b

0.0237\,\text{L mol}^{-1}

. A researcher wants the volume-correction term

\dfrac{Pb}{RT}

to be less than

1.0\%

of the ideal term at

298\,\text{K}

. What is the maximum pressure, to the nearest atmosphere, that satisfies this requirement? (Use

R = 0.0821\,\text{L atm mol}^{-1}\text{K}^{-1}

.) (a)

25\,\text{atm}

(b)

10\,\text{atm}

(c)

5\,\text{atm}

(d)

103\,\text{atm}