Question

Two substance, $P_4$ and $O_2$ are allowed to react completely to form mixture of $P_4{O}_6$ and $P_4{O}_{10}$ leaving none of the reactants. The composition of final mixture if $P_4$ and $O_2$ is taken as:
$P_4+3O_2\to P_4{O}_6$
$P_4+5O_2\to P_4{O}_{10}$.

(i) If $1$ mole $P_4$; $4$ moles of $O_2$
(ii) If $3$ moles $P_4$; $11$ moles of $O_2$
(iii) If $3$ moles $P_4$; $13$ moles of $O_2$

• A. (i) 0.5,0.5 (ii) 2,1 (iii) 1,2
• B. (i) 0.6, 0.6 (ii) 3,4 (iii) 1,2
• C. (i) 0.3, 0.3 (ii) 2,1 (iii) 3,4
• D. (i) 0.7, 0.7 (ii) 3,1 (iii) 1,3

Answer 1

The correct option is A (i) 0.5,0.5 (ii) 2,1 (iii) 1,2

(i)$P_4+3O_2\to P_4{O}_6$
0.5 1.5 0.5

$P_4+5O_2\to P_4{O}_{10}$
0.5 2.5 0.5

(ii) $P_4+3O_2\to P_4{O}_6$
2 6 2

$P_4+5O_2\to P_4{O}_{10}$
1 5 1

(iii) $P_4+3O_2\to P_4{O}_6$
1 3 1

$P_4+5O_2\to P_4{O}_{10}$
2 10 2