A reaction produces hydrogen gas. A balloon attached to the reaction vessel expands against a constant pressure of 1 atm and at the end of the reaction it is calculated that 1.5 dm³ of H₂ (g) has been produced. Calculate the energy transferred as work, w, (in J).

Question

Quizplus · Accepted Answer

The work done by the system is calculated using the formula w = -PΔV. Here, P = 1 atm = 101.3 J/dm³ and ΔV = 1.5 dm³. Therefore, w = - (101.3 J/dm³)(1.5 dm³) = -152 J.

A Reaction Produces Hydrogen Gas