consider the unbalanced equation for the oxidation of aluminum. _al + _o₂ → _al₂o₃ which sequence of…

consider the unbalanced equation for the oxidation of aluminum. _al + _o₂ → _al₂o₃ which sequence of coefficients should be placed in the blanks to balance this equation? o 2, 3, 1 o 1, 3, 2 o 4, 3, 2 o 3, 2, 3

consider the unbalanced equation for the oxidation of aluminum. _al + _o₂ → _al₂o₃ which sequence of coefficients should be placed in the blanks to balance this equation? o 2, 3, 1 o 1, 3, 2 o 4, 3, 2 o 3, 2, 3

Answer

Explanation:

Step1: Balance oxygen atoms

Oxygen in $O_2$ and $Al_2O_3$. The least - common multiple of 2 (from $O_2$) and 3 (from $Al_2O_3$) is 6. So, we need 3 moles of $O_2$ and 2 moles of $Al_2O_3$ to balance oxygen. $Al + 3O_2\rightarrow2Al_2O_3$

Step2: Balance aluminum atoms

With 2 moles of $Al_2O_3$, we have 4 moles of Al on the right - hand side. So, we need 4 moles of Al on the left - hand side. $4Al+3O_2\rightarrow2Al_2O_3$

Answer:

C. 4, 3, 2