Question

Плиииз))) Составьте овр а)Na+H2O= ...б)Ва+СL2=... в)Al+Br2=... г)HI+K=... (8класс)

Answer 1

a) Na + H2O = ...

When sodium (Na) reacts with water (H2O), it forms sodium hydroxide (NaOH) and hydrogen gas (H2) as products. The balanced chemical equation for this reaction is:

2Na + 2H2O -> 2NaOH + H2

The reaction is highly exothermic, meaning it releases a significant amount of heat. Sodium is a highly reactive metal and reacts vigorously with water, producing hydrogen gas and sodium hydroxide. [[1]]

б) Cl2 + Na = ...

When chlorine gas (Cl2) reacts with sodium (Na), it forms sodium chloride (NaCl) as the product. The balanced chemical equation for this reaction is:

Cl2 + 2Na -> 2NaCl

This is a redox reaction, where chlorine is reduced from its elemental state (Cl2) to chloride ions (Cl-) and sodium is oxidized from its elemental state (Na) to sodium ions (Na+). Sodium chloride is a common salt that is widely used in various applications. [[2]]

в) Al + Br2 = ...

When aluminum (Al) reacts with bromine (Br2), it forms aluminum bromide (AlBr3) as the product. The balanced chemical equation for this reaction is:

2Al + 3Br2 -> 2AlBr3

Aluminum bromide is an ionic compound that consists of aluminum cations (Al3+) and bromide anions (Br-). This reaction is also a redox reaction, where aluminum is oxidized from its elemental state (Al) to aluminum ions (Al3+) and bromine is reduced from its elemental state (Br2) to bromide ions (Br-). Aluminum bromide is commonly used as a catalyst in organic synthesis reactions. [[3]]

г) HI + K = ...

When hydrogen iodide (HI) reacts with potassium (K), it forms potassium iodide (KI) and hydrogen gas (H2) as products. The balanced chemical equation for this reaction is:

2HI + 2K -> 2KI + H2

Hydrogen iodide is a strong acid, and potassium iodide is a salt. This reaction is also a redox reaction, where hydrogen is reduced from its elemental state (H2) to hydrogen ions (H+) and iodine is oxidized from its elemental state (I2) to iodide ions (I-). Potassium iodide is commonly used in medicine and as a source of iodine in laboratory experiments. [[4]]

I hope this helps! Let me know if you have any further questions.