The ideal gas law
PV=nRT
relates pressure P, volume V, temperature T, and number of moles of a gas, n. The gas constant R equals 0.08206 Lâ atm/(Kâ mol)or 8.3145 J/(Kâ mol). The equation can be rearranged as follows to solve for n:
n=PVRT
This equation is useful when dealing with gaseous reactions because stoichiometric calculations involve mole ratios.
Part A)
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction
CaCO3(s)âCaO(s)+CO2(g)
What is the mass of calcium carbonate needed to produce 27.0 L of carbon dioxide at STP?
Express your answer with the appropriate units.
Part B)
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is
2C4H10(g)+13O2(g)â8CO2(g)+10H2O(l)
At 1.00 atm and 23 âC, what is the volume of carbon dioxide formed by the combustion of 3.80 g of butane?
Express your answer with the appropriate units.
The ideal gas law
PV=nRT
relates pressure P, volume V, temperature T, and number of moles of a gas, n. The gas constant R equals 0.08206 Lâ atm/(Kâ mol)or 8.3145 J/(Kâ mol). The equation can be rearranged as follows to solve for n:
n=PVRT
This equation is useful when dealing with gaseous reactions because stoichiometric calculations involve mole ratios.
Part A)
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction
CaCO3(s)âCaO(s)+CO2(g)
What is the mass of calcium carbonate needed to produce 27.0 L of carbon dioxide at STP?
Express your answer with the appropriate units.
Part B)
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is
2C4H10(g)+13O2(g)â8CO2(g)+10H2O(l)
At 1.00 atm and 23 âC, what is the volume of carbon dioxide formed by the combustion of 3.80 g of butane?
Express your answer with the appropriate units.