Problem 17
What is the density of each gas at STP? a) \(\mathrm{He}\) b) \(\mathrm{Ne}\) c) \(\mathrm{Ar}\) d) \(\mathrm{Kr}\)
Problem 17
A gas has an initial volume of \(685 \mathrm{~mL}\) and an initial temperature of \(29^{\circ} \mathrm{C}\). What is its new temperature if volume is changed to \(1.006 \mathrm{~L}\) ? Assume pressure and amount are held constant.
Problem 18
\(\mathrm{NaHCO}_{3}\) is decomposed by heat according to \(2 \mathrm{NaHCO}_{3}(\mathrm{~s}) \rightarrow \mathrm{Na}_{2} \mathrm{CO}_{3}(\mathrm{~s})+\mathrm{H}_{2} \mathrm{O}(\ell)+\mathrm{CO}_{2}(\mathrm{~g})\) If you start with \(100.0 \mathrm{~g}\) of \(\mathrm{NaHCO}_{3}\) and collect \(10.06 \mathrm{~L}\) of \(\mathrm{CO}_{2}\) over water at \(20^{\circ} \mathrm{C}\) and \(0.977 \mathrm{~atm}\), what is the percent yield of the decomposition reaction?
Problem 18
A gas has an initial volume of \(3.08 \mathrm{~L}\) and an initial temperature of \(-73^{\circ} \mathrm{C}\). What is its new volume if its temperature is changed to \(104^{\circ} \mathrm{C}\) ? Assume pressure and amount are held constant.
Problem 18
What is the density of each gas at STP? a) \(\mathrm{H}_{2}\) b) \(\mathrm{O}_{2}\) c) \(\mathrm{N}_{2}\)
Problem 19
What is the density of \(\mathrm{SF}_{6}\) at \(335 \mathrm{~K}\) and 788 torr?
Problem 20
Under what conditions do gases deviate most from ideal gas behaviour? Explain your answer.
Problem 21
Place the following gases in order from lowest to highest average molecular speed at \(25^{\circ} \mathrm{C}: \mathrm{He}, \mathrm{Ar}, \mathrm{O}_{2},\) \(\mathrm{I}_{2}\).
Problem 23
Use the van der Waal's equation to determine the pressure of 2.00 moles of helium in a \(5.00 \mathrm{~L}\) balloon at \(300.00 \mathrm{~K}\). How does this value compare to what you would obtain with the ideal gas law?
