Nitrogen dioxide is used industrially to produce nitric

Chapter 6, Problem 77P

(choose chapter or problem)

Nitrogen dioxide is used industrially to produce nitric acid, but it contributes to acid rain and photochemical smog. What volume of nitrogen dioxide is formed at 735 torr and 28.2°C by reacting \(4.95 \mathrm{~cm}^{3}\) of copper (\(\mathrm{d}=8.95 \mathrm{~g} / \mathrm{cm}^{3}\)) with \(230.0 mL\) of nitric acid (\(\mathrm{d}=1.42 \mathrm{~g} / \mathrm{cm}^{3}, 68.0 \% \ \mathrm{HNO}_{3}\) by mass):

\(\mathrm{Cu}(s)+4 \mathrm{HNO}_{3}(a q) \longrightarrow \mathrm{Cu}\left(\mathrm{NO}_{3}\right)_{2}(a q)+2 \mathrm{NO}_{2}(g)+2 \mathrm{H}_{2} \mathrm{O}(l)\)

Equation Transcription:

28.2°C

4.95 cm3

d = 8.95 g/cm3

d = 1.42 g/cm3, 68.0% HNO3 

Text Transcription:

735 torr

28.2°C

4.95 cm^3

d = 8.95 g/cm^3

230.0 mL

d = 1.42 g/cm^3, 68.0% HNO_3

Cu(s) + 4HNO_3(aq) rightarrow Cu(NO_3)_2(aq)+2NO_2(g)+2H_2O(l)