Question

ОВР Cu + H2SO4 –> CuSO4 + SO2 + H2O H2S + cl2 + H2O –> H2SO4 + Hcl

Answer 1

Cu + 2H2SO4 –> CuSO4 + SO2 + 2H2O
H2S + 4Cl2 + 4H2O –> H2SO4 + 8HCl

Answer 2

The chemical equations you provided are not balanced. I will balance them for you:

1. Cu + H2SO4 -> CuSO4 + SO2 + H2O

To balance this equation, we need to make sure that the number of atoms of each element is the same on both sides of the equation:

Cu + H2SO4 -> CuSO4 + SO2 + H2O 1 1 1 1 1

To balance the sulfur (S) atoms, we need to add a coefficient of 1 in front of H2SO4: Cu + 1H2SO4 -> CuSO4 + SO2 + H2O

To balance the hydrogen (H) atoms, we need to add a coefficient of 4 in front of H2O: Cu + 1H2SO4 -> CuSO4 + SO2 + 4H2O

Now, let's balance the oxygen (O) atoms: 1Cu + 1H2SO4 -> 1CuSO4 + 1SO2 + 4H2O

The equation is now balanced.

2. H2S + Cl2 + H2O -> H2SO4 + HCl

To balance this equation, we need to make sure that the number of atoms of each element is the same on both sides of the equation:

H2S + Cl2 + H2O -> H2SO4 + HCl 1 1 1 1 1

To balance the sulfur (S) atoms, we need to add a coefficient of 1 in front of H2SO4: H2S + Cl2 + H2O -> 1H2SO4 + HCl

To balance the hydrogen (H) atoms, we need to add a coefficient of 2 in front of HCl: H2S + Cl2 + H2O -> 1H2SO4 + 2HCl

Now, let's balance the chlorine (Cl) atoms: H2S + 1Cl2 + H2O -> 1H2SO4 + 2HCl

The equation is now balanced:

H2S + Cl2 + H2O -> H2SO4 + 2HCl

Please note that balancing chemical equations is an essential skill in chemistry to ensure that the law of conservation of mass is obeyed, and the same number of atoms of each element is present on both sides of the equation.