Question

Изначите ступені окиснення елементів, складіть електронний баланс та розставте коефіцієнти в таких оксидно-відновних реакціях, встновіть FeCl3 + H2S → FeCl2 + HCl + S Fe + HCl → FeCl2 + H2 HI + H2SO4 → I2 + H2S + H2O HgO → Hg + O2 K + H2SO4 → K2SO4 + H2S + H2O

Answer 1

Ответ:

.

Объяснение:

2Al+6HCl=2AlCl3+3H2.

2 FECl3 + H2S = 2 FECl2 + S + 2 HCl

Fe + 2 HCl = FeCl2 + H2

8 HI + H2SO4 = 4 I2 + H2S + 4 H2O

2 HgO = 2 Hg + O2

8 K + 5 H2SO4 = 4 K2SO4 + H2S + 4 H2O

Answer 2

Oxidation States of Elements and Electron Balancing

The oxidation state of an element refers to the charge it would have if all its bonds were 100% ionic. It is a way to keep track of the distribution of electrons in a compound or a reaction. To determine the oxidation state of an element, we need to consider the electronegativity of the elements involved and the overall charge of the compound or reaction.

Here are the oxidation states of the elements in the given reactions:

1. FeCl3 + H2S → FeCl2 + HCl + S - In FeCl3, the oxidation state of Fe is +3, and the oxidation state of Cl is -1. - In H2S, the oxidation state of H is +1, and the oxidation state of S is -2. - In FeCl2, the oxidation state of Fe is +2, and the oxidation state of Cl is -1. - In HCl, the oxidation state of H is +1, and the oxidation state of Cl is -1. - In S, the oxidation state of S is 0.

2. Fe + HCl → FeCl2 + H2 - In Fe, the oxidation state of Fe is 0. - In HCl, the oxidation state of H is +1, and the oxidation state of Cl is -1. - In FeCl2, the oxidation state of Fe is +2, and the oxidation state of Cl is -1. - In H2, the oxidation state of H is 0.

3. HI + H2SO4 → I2 + H2S + H2O - In HI, the oxidation