A. 10 J
B. 50 J
C. 100 J
D. 250 J
I had been asked this question during an interview.
My doubt stems from Heat Capacity Equations in section Introduction to Energy Balances for Processes without Reaction and Calculation of Enthalpy Changes of Basic Chemical Engineering
To elaborate: Enthalpy change is the area covered under CP-T curve = Area of rectangle = 10*(10 – 5) = 50 J.