Consider a gas in a 1.0-L bulb at STP that is connected via a valve to another bulb that is initially evacuated. Answer the following questions about what occurs when the valve between the two bulbs is opened.
-What is true about the value of $\Delta$H?

Question

Quizplus · Accepted Answer

When the valve is opened, the gas expands into the evacuated bulb without any heat exchange with the surroundings, making the process adiabatic. Since no work is done on or by the system, the change in enthalpy (ΔH) is zero.

Consider a Gas in a 1 Δ\DeltaΔ H? A) It Is Greater Than Zero

Consider a Gas in a 1 $\Delta$ H?
A) It Is Greater Than Zero