Pb(OH)4 + Cu2O --> PbO2 + CuOH what is the balanced equation

Pb(OH)4 + 2Cu2O → PbO2 + 4CuOH  

Explanation:

Pb(OH)4 + Cu2O --> PbO2 + CuOH

The end goal of balacing chemical equations is to make sure there is no gain or loss of atoms of elements. Number of atoms of elements in the left side (reactant) must balance with the right side (product) of the reaction.

Currently, the number of Cu, H and O atoms are not balanced.

Pb

Reactant = 1, Product = 1

O

Reactant = 5, Product = 3

Cu

Reactant = 2, Product = 1

H

Reactant = 4, Product = 1

The balanced equation is given as;

Pb(OH)4 + 2Cu2O → PbO2 + 4CuOH  

Pb

Reactant = 1, Product = 1

O

Reactant = 6, Product = 6

Cu

Reactant = 4, Product = 4

H

Reactant = 4, Product = 4

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be