JEE Main 2013 Chemistry question
A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.0ºC. As it does so, it absorbs 208 J of heat. The values of q and w for the process will be - (R = 8.314 J/mol K) (n 7.5 = 2.01)
Answer: (3)
Solution
At constant T, ΔE = 0, so q = -W. Since heat absorbed = +208 J, q = +208 J and W = -208 J.