does anyone know how to balance this chemical equation???

Question

ok help on balancing chemical equation!! H2S+O2=H2O+SO2! i dont get how to do this one and need it for tom.!!! i really need help bc my homework is already late a day and i just dont get it

Answer 1

On right side you have 3 O's, 2 H's and 1 S.
On the left side you have 2 O's, 2 H's and 1 S.
Everything is "balanced" except the oxygen.

First, find the smallest common multiple of O on both sides, which is 6. Then distribute the O's so each side has the same number of O's:

H2S + 3 O2 = 2 H2O + 2 SO2.

In doing this, realize that you must work with the molecules not the individual oxygen atoms. You have an O2 molecule on the left, so you have to add none, one, two, three, etc. O2 molecules to that side. The oxygen on the right is divided between the H2O molecule (one O atom) and the SO2 molecule (two O atoms) or a total of three O atoms on the right. That is why you need a common multiple of six O atoms, which to get those six on the left you need 3 O2's and to get those six on the right you need two H2O's and two SO2's.

But now you have too much H (4 atoms) and too much S (2 atoms) on the right side, so add another molecule of H2S to the left side:

2 H2S + 3 O2 = 2 H2O + 2 SO2.

Done! You now have 4 H's, 2 S's, and 6 O's on both sides so the equation is balanced.

This can get really complicated with complex chemical compounds, but just remember you are always working with molecules (not atoms!) on each side. You can have as many molecules as you wish, on either side, as long as the total number of atoms of each element is the same on both sides. The trick is to find a common multiple of each atom for both sides and then choose the appropriate number of molecules (which in general will be different compounds) for each side so both sides have the same common multiple.

For the example problem, that was six oxygens from three O2 molecules on the left, and two oxygens from two H2O molecules plus four oxygens from two SO2 molecules.

I hope this clears things up for you.

Answer 2

this is not too difficult

when ever u r going to balance any thing just see what going on with the equation
just see that the oxygen is not balance there u don't have to change any thing just multiply 02 by (3/2)

Equation will balance

H2S+(3/2)02j=H2O+SO2

Answer 3

2H2S+3O2=2H2O+2SO2