Question

How many moles of oxygen are produced by the decomposition of six moles of potassium chlorate?

$2KCl{O}_3\to 2KCl+3O_2$

• A. 3 mole
• B. 6 mole
• C. 9 mole
• D. 12 mole

Answer 1

The correct option is C

9 mole

Stoichiometry represents the amount of substance that takes part in a chemical reaction.

The explanation for the Correct answer:

• From the reaction, it is shown that $2mole$ of Potassium chlorate produces $3moleof{O}_2$.
• Now one-mole Potassium chlorate produces $\frac{3}{2}molofoxygen$,

Hence six-mole potassium chlorate produces $6\times \frac{3}{2}=9molof{O}_2$.

The explanation for incorrect options:

• As the six-mole potassium chlorate produces nine moles of oxygen that means these options are incorrect.