Determine which of the following reactions at constant pressure represent surrounding that do wo...
Determine which of the following reactions at constant pressure represent surrounding that do work on the system?
I. \( 4 \mathrm{NH}_{3}(\mathrm{~g})+7 \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow 4 \mathrm{NO}_{2}(\mathrm{~g})+6 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \)
II. \( \mathrm{CO}(\mathrm{g})+2 \mathrm{H}_{2}(\mathrm{~g}) \longrightarrow \mathrm{CH}_{3} \mathrm{OH}(\ell) \)
III. \( \mathrm{C}(\mathrm{s} \), graphite \( )+\mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \longrightarrow \mathrm{CO}(\mathrm{g})+\mathrm{H}_{2}(\mathrm{~g}) \)
IV. \( \mathrm{H}_{2} \mathrm{O}(\mathrm{s}) \longrightarrow \mathrm{H}_{2} \mathrm{O}(\ell) \)
(a) III, IV
(b) II and III
- (c) II, IV
(d) I and II, IV
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