Question

Balance the chemical reaction that takes place in the boosters. Let the coefficient of Al2O3 be ‘x’. What weight of Oxygen would react with aluminium to form ‘x’ moles of Al2O3 ?​

Answer 1

Explanation:

Al(s)+O

2

(g)→Al

2

O

3

(s)

Balance Al atoms by adding 2 to Al on LHS

2Al(s)+O

2

(g)→Al

2

O

3

(s)

Balance O atoms by adding

2

3

to O

2

on LHS

2Al(s)+

2

3

O

2

(g)→Al

2

O

3

(s)

Multiply the whole equation with 2.

4Al(s)+3O

2

(g)→2Al

2

O

3

(s)

This is the balanced chemical equation. The coefficient of O

2

is 3.