What volume (in ml) of carbon dioxide will form if 19.3 ml of O2 are reacted acccording to the following balanced equation:
2CO(g) + O2(g) --> 2CO2(g)
Assume an excess of CO and that all are at the same temperature and pressure.
Just follow these steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html
To find the volume of carbon dioxide (CO2) produced, we need to use the stoichiometry from the balanced equation.
The coefficient ratio in the balanced equation tells us the mole ratio of reactants and products. In this case, the coefficient ratio of O2 to CO2 is 1:2, meaning that for every 1 mole of O2 reacted, 2 moles of CO2 are formed.
Step 1: Convert the given volume of O2 to moles.
To do this, we need to use the ideal gas law equation:
PV = nRT
We assume that the O2 gas is at the same temperature and pressure as stated in the problem.
Step 2: Use the mole ratio from the balanced equation to find the moles of CO2 produced.
Since the mole ratio between O2 and CO2 is 1:2, the moles of CO2 formed would be twice the moles of O2 reacted.
Step 3: Convert moles of CO2 to volume in milliliters (ml).
To do this, we again use the ideal gas law equation, rearranged to solve for volume (V) instead of moles (n).
Let's calculate it step by step:
Step 1: Convert the given volume of O2 to moles.
We are given the volume of O2 gas, which is 19.3 ml. Since the gases are at the same temperature and pressure, we can directly convert ml to moles using the ideal gas law equation:
PV = nRT
Assuming the temperature and pressure are constant, we can rearrange the equation as follows:
n = PV / RT
Substituting the given values:
P = pressure, which is constant
V = volume of O2 gas = 19.3 ml
R = ideal gas constant
T = temperature, which is constant
Step 2: Use the mole ratio from the balanced equation to find the moles of CO2 produced.
According to the balanced equation, the mole ratio of O2 to CO2 is 1:2. Therefore, the moles of CO2 formed will be twice the moles of O2.
Moles of CO2 = 2 * Moles of O2 (from step 1)
Step 3: Convert moles of CO2 to volume in milliliters (ml).
Again, using the ideal gas law equation, rearrange it to solve for volume (V) instead of moles (n):
V = nRT / P
Substituting the values:
n = moles of CO2 (from step 2)
R = ideal gas constant
T = temperature, which is constant
P = pressure, which is constant
Using these calculations, we can find the volume (in ml) of carbon dioxide formed.