A sample of gas consists of `mu_(1)` moles of monoatomic molecules, `mu_(2)` moles of diatomic molecules and `mu_(3)` moles of linear triatomic molecules. The gas is kept at high temperature. What is the total number of degrees of freedom?

Options

A. `[3mu_1+7(mu_2+mu_3)]N_A`
B. `[3mu_1+7mu_2+6mu_3]N_A`
C. `[7mu_1+3(mu_2+mu_3)]N_A`
D. `[3mu_1+6(mu_2+mu_3)]N_A`

Answer

A

Explanation

For monoatomic molecule no. of degrees freedom = 3
For diatomic molecule no. of degrees of freedom = 5
For triatomic molecule no . Of degrees of freedom = 7
Total `=[3mu_1+7(mu_2+mu_3)]N_A`