INTRODUCING 5 - days-a-week problem solving session for Math Olympiad and ISI Entrance. Learn More

A rigid triangular molecule consists of three non-collinear atoms joined by rigid rods. The constant pressure molar specific heat (C_p) of an ideal gas consisting of such molecules is

(a) (6R)

(b) (5R)

(c) (4R)

(d) (3R)

Degrees of freedom are the number of independent parameters that define its configuration

If (N) be the number of particles in a system and (k) be the number of constraints between the number of degrees of freedom is given by $$ f=3N-k$$ $$f=(3*3)-3$$ $$=6$$

Relation between (f) and (C_p) $$ C_p=(f/2+1)R$$ $$ \Rightarrow C_p=(6/2+1)R$$ $$C_p=4R$$

Advanced Mathematical Science. Taught by olympians, researchers and true masters of the subject.

JOIN TRIAL
Google