Question

When $10$ moles of an ideal gas expand from a pressure of $10$ atm pressure of $1$ atm reversibly and isothermally then entropy change is : [Take: ln $10=2.3$]

• A. $-20cal$
• B. $-46cal$
• C. $-4.6cal$
• D. $2cal$

Answer 1

The correct option is B $-46cal$