Question

The entropy change when two moles of ideal monatomic gas is heated from `200 "to" 300^(@) C` reversibly and isochorically ?
A. `(3)/(2) R In ((300)/(200))`
B. `(5)/(2) R In ((573)/(273))`
C. `3R In ((573)/(473))`
D. `(3)/(2) R In ((573)/(473))`

Answer 1

Correct Answer - C
`DeltaS_("gas") = nC_(v.m) "In" (T_(2))/(T_(1)) = 2 xx (3)/(2)R "In" (573)/(473) = 3R"In"((573)/(473))`