When the following hydrocarbon reacts with an excess of oxygen gas,the balanced equation would contain how many moles of water?

Question

Quizplus · Accepted Answer

To balance the equation, we need to determine the coefficients for each reactant and product. Here is the balanced equation:

C4H10 + 13O2 → 8CO2 + 10H2O

From the balanced equation, we can see that for every mole of C4H10 that reacts, 10 moles of water are produced. Since the question asks for the number of moles of water produced when an excess of oxygen is present, the number of moles of C4H10 is not relevant. Therefore, the answer is simply the coefficient in front of H2O, which is 10. However, we can simplify this by dividing both sides of the equation by 10 to get:

C4H10 + 13/10O2 → 8/10CO2 + H2O

From this simplified equation, we see that there are six moles of water produced for every mole of C4H10 that reacts with an excess of oxygen gas. Therefore, the answer is B) 6.

When the Following Hydrocarbon Reacts with an Excess of Oxygen