Question

СРОЧНО ДАЮ 40 БАЛЛОВ ПОМОГИТЕ !!!!!! вызначте ступени окиснення елементив у сполуках з гидрогеном CH 4; NH3HCI ;CaH2;KH;HI​

Answer 1

Ответ:

См. фото

Объяснение:

Answer 2

Stages of Oxidation of Elements in Compounds with Hydrogen

When elements combine with hydrogen to form compounds, they can undergo different stages of oxidation. The oxidation state of an element in a compound indicates the number of electrons it has gained or lost. Here are the oxidation states of the elements in the compounds you mentioned:

1. CH4 (methane): - Carbon (C) has an oxidation state of -4. - Hydrogen (H) has an oxidation state of +1. - The oxidation state of carbon in methane is -4 because hydrogen is usually assigned an oxidation state of +1, and the sum of the oxidation states in a compound is zero.

2. NH3 (ammonia): - Nitrogen (N) has an oxidation state of -3. - Hydrogen (H) has an oxidation state of +1. - The oxidation state of nitrogen in ammonia is -3 because hydrogen is usually assigned an oxidation state of +1, and the sum of the oxidation states in a compound is zero.

3. HCl (hydrochloric acid): - Hydrogen (H) has an oxidation state of +1. - Chlorine (Cl) has an oxidation state of -1. - The oxidation state of chlorine in hydrochloric acid is -1 because hydrogen is usually assigned an oxidation state of +1, and the sum of the oxidation states in a compound is zero.

4. CaH2 (calcium hydride): - Calcium (Ca) has an oxidation state of +2. - Hydrogen (H) has an oxidation state of -1. - The oxidation state of calcium in calcium hydride is +2 because hydrogen is usually assigned an oxidation state of -1, and the sum of the oxidation states in a compound is zero.

5. KH (potassium hydride): - Potassium (K) has an oxidation state of +1. - Hydrogen (H) has an oxidation state of -1. - The oxidation state of potassium in potassium hydride is +1 because hydrogen is usually assigned an oxidation state of -1, and the sum of the oxidation states in a compound is zero.

6. HI (hydroiodic acid): - Hydrogen (H) has an oxidation state of +1. - Iodine (I) has an oxidation state of -1. - The oxidation state of iodine in hydroiodic acid is -1 because hydrogen is usually assigned an oxidation state of +1, and the sum of the oxidation states in a compound is zero.

Please note that these oxidation states are general guidelines and may vary in certain cases depending on the specific compound and its chemical environment.