[Video]at constant pressure, which of these systems do work on the surroundings? check all that apply.


At constant pressure, which of these systems do work on the surroundings? check all that apply.

a. 2A(g)+3B(g) –> 4C(g)

b. A(s)+B(g) –> 2C(g)

c. A(g)+B(g) –> 3C(g)

d. A(s)+2B(g) –> C(g)

To calculate work, we use the equation:

w=ΔngRT

We must find the value for Δng

in each of the reactions in order to figure out if work will be positive or negative. REMEMBER: If work done is negative, this implies that the ongoing work is performed BY the machine on the environment. Negative work reactions will be our answer.

We should calculate Δng
in each response. This represents the noticeable change in the number of moles of the reaction.

External links:
https://en.wikipedia.org/wiki/Pressure

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Originally posted 2018-04-05 06:15:23.