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# Work on Surroundings

CHEM-XTNB5G

At constant pressure, which of the following systems do work on the surroundings?

Select ALL that apply.

A

${N}_{2} (g) + {O}_{2} (g) \rightarrow 2\ NO (g)$

B

$C \ \text{(graphite)} + C{O}_{2} (g) \rightarrow 2\ CO (g)$

C

$2NaHC{O}_{3} (s) \rightarrow {Na}_{2}C{O}_{3} (s) + {H}_{2}O (g) + C{O}_{2} (g)$

D

$CO (g)+ 2{H}_{2} (g) \rightarrow C{H}_{3}OH (g)$