Question

1. Na + Cl2 → NaCl; 2. P2O3 + O2 → P2O5; 3. NH3 + O2 → N2 + H2O; 4. FeCl3 + H2S → FeCl2 + S↓ + HCl; 5. FeCl3 + KI → FeCl2 + I2↓ + KCl; 6. CuS + HNO3(конц.) → CuSO4 + NO↑ + H2O; 7.PbS + H2O2 → PbSO4 + H2O; 8.Mn2O7 → MnO2 + O2↑.

Answer 1

Объяснение:

нету всё понятно это магия

Answer 2

It looks like you've provided a list of chemical reactions. Here's a breakdown of each reaction:

1. Na + Cl2 → NaCl: This is a simple combination reaction where sodium (Na) reacts with chlorine gas (Cl2) to form sodium chloride (NaCl), which is a salt.

2. P2O3 + O2 → P2O5: This is an oxidation reaction where diphosphorus trioxide (P2O3) reacts with oxygen (O2) to form diphosphorus pentoxide (P2O5).

3. NH3 + O2 → N2 + H2O: This is a combustion reaction where ammonia (NH3) reacts with oxygen (O2) to form nitrogen gas (N2) and water (H2O).

4. FeCl3 + H2S → FeCl2 + S↓ + HCl: In this reaction, iron(III) chloride (FeCl3) reacts with hydrogen sulfide (H2S) to form iron(II) chloride (FeCl2), sulfur (S) precipitates as a solid (↓), and hydrogen chloride (HCl) is released as a gas.

5. FeCl3 + KI → FeCl2 + I2↓ + KCl: This reaction involves iron(III) chloride (FeCl3) reacting with potassium iodide (KI) to form iron(II) chloride (FeCl2), iodine (I2) precipitates as a solid (↓), and potassium chloride (KCl) is formed.

6. CuS + HNO3(конц.) → CuSO4 + NO↑ + H2O: Copper(II) sulfide (CuS) reacts with concentrated nitric acid (HNO3) to form copper(II) sulfate (CuSO4), nitric oxide gas (NO) is released as a gas (↑), and water (H2O) is also produced.

7. PbS + H2O2 → PbSO4 + H2O: Lead(II) sulfide (PbS) reacts with hydrogen peroxide (H2O2) to form lead(II) sulfate (PbSO4) and water (H2O).

8. Mn2O7 → MnO2 + O2↑: This is a decomposition reaction where manganese(VII) oxide (Mn2O7) breaks down into manganese(IV) oxide (MnO2) and oxygen gas (O2) is released as a gas (↑).

These reactions represent various types of chemical reactions, including combination, oxidation, combustion, precipitation, and decomposition reactions.