Question

For a particular process q=10 kJ and w=25kJ. Which of the following statement is true?

• A. Heat flows from the surroundings to the system.
• B. The system does work on the surroundings.
• C. $\Delta E=+35kJ$
• D. None of the above is true

Answer 1

Answer: (A)

Heat flows from the surroundings to the system.

Heat flows from the surroundings to the system.

Given that:-

$q=10KJ$

$W=25KJ$

As we know that,

$\Delta E=q+w$

$\because q>0\to$ heat is flowing from surrounding to system.

$w>0\to$ work is done on the system by the surroundings.

$\therefore \Delta E=(10+25)KJ=-35KJ$