Question

A diatomic molecule can be modelled as two rigid balls connected with spring such that the balls can vibrate with respect to centre of mass of the system (spring + balls). Consider a diatomic gas made of such diatomic molecule. If the gas performs 20 Joule of work under isobaric condition, then heat given to the gas is ______ J.

विकल्प

• 50

• 60

• 70

• 80

Answer 1

A diatomic molecule can be modelled as two rigid balls connected with spring such that the balls can vibrate with respect to centre of mass of the system (spring + balls). Consider a diatomic gas made of such diatomic molecule. If the gas performs 20 Joule of work under isobaric condition, then heat given to the gas is 70 J.

Explanation:

`(Delta"Q")/"W" = ("nC"_"p"Delta"T")/("nR"Delta"T")`

⇒ ΔQ = `"C"_"p"/"R"."W"`

= `7/2xx20`

= 70 J