One mole of potassium chlorate is thermally decomposed and excess of aluminium is burnt in the gaseous product. How many moles of aluminium oxide are formed ?

Question

One mole of potassium chlorate is thermally decomposed and excess of aluminium is burnt in the gaseous product. How many moles of aluminium oxide are formed ? (A) 1 (B) 2 (C) 1.5 (D) 3

Tardigrade Admin · Accepted Answer

2 KClO3→ 2KCl+3O2 4Al+3O2→ 2Al2O3 2 moles of KClO3 gives 2 moles of Al2O3 ∴ 1 mol of KCIO3 gives 1 mol of Al2O3

Q. One mole of potassium chlorate is thermally decomposed and excess of aluminium is burnt in the gaseous product. How many moles of aluminium oxide are formed ?

1

2

1.5

3

$2 K Cl O_{3} \to 2 K Cl + 3 O_{2}$
$4 A l + 3 O_{2} \to 2 A l_{2} O_{3}$
$2$ moles of $K Cl O_{3}$ gives $2$ moles of $A l_{2} O_{3}$
$∴$ $1$ mol of $K C I O_{3}$ gives 1 mol of $A l_{2} O_{3}$

Q. One mole of potassium chlorate is thermally decomposed and excess of aluminium is burnt in the gaseous product. How many moles of aluminium oxide are formed ?

1

2

1.5

3

2KClO3​→2KCl+3O2​ 4Al+3O2​→2Al2​O3​ 2 moles of KClO3​ gives 2 moles of Al2​O3​ ∴ 1 mol of KCIO3​ gives 1 mol of Al2​O3​

$2 K Cl O_{3} \to 2 K Cl + 3 O_{2}$
$4 A l + 3 O_{2} \to 2 A l_{2} O_{3}$
$2$ moles of $K Cl O_{3}$ gives $2$ moles of $A l_{2} O_{3}$
$∴$ $1$ mol of $K C I O_{3}$ gives 1 mol of $A l_{2} O_{3}$