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Hello,

I was wondering if someone could help me with a couple of Chemistry questions.

The first

question is about incomplete combustion. I am confused on how to find an answer for incomplete combustion. I have seen practice answers from different sources that have a combination of H2O, C, CO, and CO2 or some had all of them in the answer. How do I determine which to use in an equation? The question I am trying to figure out is:


1 ) For one of the fuels in gasoline, pentane (C5H12), complete the following combustion reactions. Make certain your equations are balanced.

a.     incomplete combustion C5H12 + O2



For the next two questions, I was just wondering if you could please let me know if I'm on the right track for my answers.


2) Use both the metal and the halogen activity series to predict whether each of the following reactions will occur. Write the formulas for the products and balance the equation, if the reaction does take place.

a. AgNO3 + Zn →

No reaction would take place because Silver (Ag) is lower than Zinc (Zn).

b. Cl2 + NaI →

Cl2 + 2NaI → 2NaCl + I2

c. Fe + Al2O3

No reaction would take place because Iron (Fe) is lower than Aluminum (Al).


In this next question, I was just wondering if it is referring to acid rain? And if so, am I on the right track for the chemical equations?


3) In Ontario, some electricity comes from coal-burning generators. Coal is a natural form of carbon that has a large amount of sulphur mixed in with it. Here are the balanced equations for the combustion of coal and sulphur:

carbon + oxygen → carbon dioxide

C + O2 → CO2

sulphur + oxygen → sulphur dioxide

S + O2 → SO2

Answer the following questions based on the burning of coal to produce energy:

a.     In what way is the combustion of sulphur harmful to the environment?


b. Write the word equation and balanced chemical equation for the reaction that produces this harmful environmental effect.


Sulphur dioxide + Water → Sulphurous acid

SO2 + H2O → H2SO3

Thank you very much for your help! 

Top Answer

1 ) a.incomplete combustion leads to CO and H2O as products. Complete combustion reaction leads to CO2 and H2O as... View the full answer

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