At constant pressure, which of these systems do work on the surroundings? Check all that apply.
- 2A(g) + 3B(g) —> 4C (g)
- A(s) + B(s) --> C (g)
- 2A(g) + 2B(g) —> 3C(g)
- 2A(g) +B(g) —> 4C(g)
Answer:
sum of moles of gas on left side should be greater than the right side
so,
- Works , 5>4
- Not work , 0<1
- Works , 4>3
- Not work , 3<4