State one natural source and one man-made source of atmospheric $\text{NO}_2$.\n\nnatural ________\n\nman-made ________
Write an equation to show how $\text{NO}_2$ brings about the formation of nitric acid in acid rain.
Use equations to show the catalytic function of $\text{NO}_2$ in producing sulfuric acid in acid rain.
Nitrogen dioxide is in equilibrium with dinitrogen tetroxide, $\text{N}_2\text{O}_4$.\n\n$\text{2NO}_2(\text{g}) \rightleftharpoons \text{N}_2\text{O}_4(\text{g})$\n\n$2.00\,\text{mol}$ of dinitrogen tetroxide was placed in a sealed container at $350\,\text{K}$. Once equilibrium had been reached the total pressure was $140\,\text{kPa}$ and the gas mixture contained $1.84\,\text{mol}$ of dinitrogen tetroxide.\n\nGive the expression for the equilibrium constant, $K_p$, for this equilibrium.
Calculate how many moles of $\text{NO}_2$ are present at equilibrium.
Calculate the total number of moles of gas at equilibrium and then determine the mole fraction of each gas at equilibrium.
Calculate the partial pressures for each gas present at equilibrium.
Calculate the value of $K_p$ at $350\,\text{K}$. Give your answer to three significant figures and include the units.
Calculate the partial pressures of all gases present at equilibrium.
Calculate the value of the equilibrium constant, $K_p$, at $350\,\text{K}$. Provide the answer to three significant figures and include the units.