Question

Determine how many moles of O2 are required to react completely with 6.5 moles C6H14.

Answer 1

Answer: 62 moles of $O_2$

Explanation:

Combustion is a type of chemical reaction in which a substance is reacted with oxygen to form carbon dioxide and water.

The balanced chemical reaction for combustion of $C_6H_{14}$

$2C_6H_{14}+19O_2 \rightarrow 12CO_2+14H_2O$

From the stoichiometry:

2 moles of hexane react with = 19 moles of oxygen

Thus 6.5 moles of hexane react with = $\frac{19}{2}\times 6.5=62$ moles of oxygen

Thus 62 moles of $O_2$ are required to react completely with 6.5 moles of $C_6H_{14}$.