Question

Урівняйте за допомогою електронного балансу слідуючі реакції: 1)FeS+O2=Fe2O3+SO2 2)HgO=Hg+O2 Cl2+KOH=KCl+KClO3+H2O

Answer 1

4FeS + 7O2 = 2Fe2O3 + 4SO2    2HgO= 2Hg + O2         3Cl2 + 6KOH = 5KCl + KClO3 + 3H2O

Answer 2

Balancing Chemical Equations

To balance the given chemical reactions using an electronic balance, we need to ensure that the same number of each type of atom is present on both sides of the equation.

1) FeS + O2 = Fe2O3 + SO2

First, let's balance the equation for the elements other than oxygen and sulfur.

The unbalanced equation is: FeS + O2 = Fe2O3 + SO2

Balancing the iron atoms: FeS + 4O2 = Fe2O3 + SO2

Balancing the sulfur atoms: FeS + 4O2 = Fe2O3 + 2SO2

Now, let's balance the oxygen atoms: FeS + 7O2 = Fe2O3 + 2SO2

Finally, the balanced equation is: 4FeS + 7O2 = 2Fe2O3 + 2SO2 [[1]]

2) HgO = Hg + O2

The unbalanced equation is: HgO = Hg + O2

Balancing the mercury atoms: 2HgO = 2Hg + O2

The balanced equation is: 2HgO = 2Hg + O2 [[2]]

3) Cl2 + KOH = KCl + KClO3 + H2O

The unbalanced equation is: Cl2 + KOH = KCl + KClO3 + H2O

Balancing the chlorine atoms: Cl2 + 6KOH = 5KCl + KClO3 + H2O

The balanced equation is: Cl2 + 6KOH = 5KCl + KClO3 + H2O [[3]]