Question

Universal gas constant $(R)$ is divided by Avogadro's number $(N)$ then the value is equivalent to:

• A. van der Waals constant
• B. Rydberg's constant
• C. Planck's constant
• D. Boltzmann's constant

Answer 1

Answer: (D)

Universal gas constant $(R)=8.31J/molK$
Avogadro's number $(N)=6.023\times 10^{23}mol$
$\therefore \frac{R}{N}=\frac{8.31J/molK}{6.023\times 10^{23}mol}$
$=1.38\times 10^{-23}J/K$
$1.38\times 10^{-23}J/K$ is the value of Boltzmann's constant.