Question

2
11. What will be the stoichiometric coefficient of HCL
and PbCl2 in Pb304 + HCI -> PbCl2 + Cl2, +
H₂O?
(1) 7 & 4
(2) 8 & 3
(3) 6 & 2
(4) 5 & 3​

Answer 1

The stoichiometric coefficient of $HCl$  and $PbCl_2$ in $Pb_3O_4+HCI\rightarrow PbCl_2+Cl_2+H_2O$ is 8 and 3

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$Pb_3O_4+8HCI\rightarrow 3PbCl_2+Cl_2+4H_2O$

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