Calculate the amount of grams of carbon dioxide formed from 100 g of octane. The molar mass of octane is 114.33 g/mole. The molar mass of carbon dioxide is 44.0095 g/mole/
2 C8H18 + 25 O2 ---> 16 CO2 + 18 H20
How do I go about doing this problem? How much would the approach change if I had to find the moles of carbon dioxide formed from the same amount of octane? Thanks for any insight into this problem!
each mole of octane produces 8 moles CO2
so, you have 100/114.33 * 8 moles CO2 * 44g/mole
It's like 6.0
- If 100 grams of C8H18 burns, how many moles of carbon dioxide will form?
-If 5 moles of oxygen are used, how many grams of water will form?
To calculate the amount of grams of carbon dioxide formed from 100 g of octane, we will use stoichiometry, which is a method that relates the ratios of moles in a balanced chemical equation.
Given:
- The molar mass of octane is 114.33 g/mole.
- The molar mass of carbon dioxide is 44.0095 g/mole.
- The balanced chemical equation is:
2 C8H18 + 25 O2 ---> 16 CO2 + 18 H2O
Step 1: Calculate the moles of octane.
The number of moles can be calculated using the formula: moles = mass / molar mass.
moles of octane = 100 g / 114.33 g/mole.
moles of octane = 0.874 moles (rounded to 3 decimal places).
Step 2: Use stoichiometry to find the moles of carbon dioxide.
From the balanced equation, we can see that 2 moles of octane produce 16 moles of carbon dioxide.
Using a ratio of moles, we can calculate the moles of carbon dioxide formed from the moles of octane.
moles of carbon dioxide = (moles of octane x 16) / 2.
moles of carbon dioxide = (0.874 moles x 16) / 2.
moles of carbon dioxide = 6.992 moles (rounded to 3 decimal places).
Step 3: Calculate the grams of carbon dioxide.
Using the moles of carbon dioxide calculated in step 2, we can find the grams of carbon dioxide using the formula: mass = moles x molar mass.
grams of carbon dioxide = moles of carbon dioxide x molar mass of carbon dioxide.
grams of carbon dioxide = 6.992 moles x 44.0095 g/mole.
grams of carbon dioxide = 307.912 g (rounded to 3 decimal places).
So, 100 g of octane will produce approximately 307.912 g of carbon dioxide.
If you want to find the moles of carbon dioxide formed from the same amount of octane, follow steps 1 and 2 as shown above. The only difference is that you stop at step 2, which gives you the moles of carbon dioxide directly (6.992 moles in this case).
I hope this helps! Let me know if you have any further questions.