# Chemistry

posted by .

Could someone please tell me if I did this question right?

An incomplete reaction of 12.125 grams of propane proceeds as follows.

2C3H8+11O2 --> 3CO2+4H2O+2CO+C(s)

How many grams of solid carbon residue are produced as a product?

Step 1)
Balanced the given chemical equation:

2C3H8 + 11O2=3CO2+ 4H2O + 2CO + C
=7C3H8 + 19O2=6CO + 28H2O + 4CO + 11C

Step 2)
Convert 12.125 grams of propane to moles:

12.125g/(44.0956g/mol)
=.27497mol

step 3)
The ratio of propane to carbon is 7:11(or 1 to 1.5714). Therefore, for every mole of propane there will be 1.5714 moles of carbon.

1.5714(.27497mol)=.41630mol of carbon.

step 4)
Convert back to grams.
.41630mol(12.0107g/mol)
= 5.0000g

In the given reaction, 5.0000g of solid carbon will be produced.

• Chemistry -

correct

• Chemistry -

Thank you.

• Chemistry -

I have news for you. The equation you wrote isn't balanced; therefore, if you have the right answer it is only because the coefficients just happened to work out that way.

## Similar Questions

1. ### Chemistry

Can someone please check to see if I balanced this chem. equation which is an incomplete combustion reaction: 2C3H8 + 11O2 ->> 3CO2 + 4H2O +2CO +C(s) My answer: 7C3H8 +22O2 -->> 6CO2 + 28H2O +4CO +11C Thanks!
2. ### chemistry

Could someone please tell me if I did this question correctly?
3. ### Chemistry

Consider the combustion of propane (C3H8) in the presence of oxygen: C3H8+5O2 => 3CO2+4H2O How many grams of O2 are required to react completely with 3 moles of propane?
4. ### chemistry

The combustion of propane (C3H8)produces CO2 and H20: C3H8(g)+5O2(g) 3CO2(g)+4H2O(g) Calculate the mass, in grams, of H2O that will be produced if 2.5 mol of O2 is consumed.
5. ### chemistry

The combustion of propane (C3H8)produces CO2 and H20: C3H8(g)+5O2(g) 3CO2(g)+4H2O(g) Calculate the mass, in grams, of H2O that will be produced if 2.5 mol of O2 is consumed.
6. ### chemisrty

Q5) The reaction for the combustion of propane is as follows: C3H8 + 5O2 ---->>3CO2 + 4H2O 1. If 20.0 g of C3H8 and 20.0 g of O2 are reacted, which is the limiting reactant?
7. ### applying stoichiometry

Propane (C3H8) + oxygen------> carbon dioxide + water how many grams of carbon dioxide are produced from the reaction of 35.2 grams of propane?
8. ### Chemistry

How many grams of carbon dioxide are produced in C3H8+5O2 -> 3CO2+4H2O
9. ### Chemistry

Calculate the number of grams of propane (C3H8) consumed if 17.7 g of water is produced according to the reaction: C3H8(g)+5O2(g)=3CO2(g)+4H2O(g)
10. ### Chemistry

1. Iron oxide and carbon monoxide react according to the following equation . Identify which reactant is limiting and which is excess if 43.5 grams of Fe2O3 reacts with 43.5 grams of CO Fe2O3 + 3CO2 --> 3CO2 + 2Fe 2. Calculate the …

More Similar Questions