Question

Схемы Реакций соответственно замещения и обмена: 1) Cu+O2-> и H2SO4+Al2O-> 2) CuSO4+ZN-> и NaOH+HNO3-> 3) KOH+HCl-> и Al+S-> 4) Ca(OH)2+HCl-> и CO2+H2O->

Answer 1

Ответ:

2)

Объяснение:

Цинк замещает медь, между щелочью и кислотой происходит обмен, получается соль и вода

Answer 2

#### Reaction Schemes for Substitution and Exchange Reactions: 1) Cu + O2 -> ? and H2SO4 + Al2O -> ? 2) CuSO4 + Zn -> ? and NaOH + HNO3 -> ? 3) KOH + HCl -> ? and Al + S -> ? 4) Ca(OH)2 + HCl -> ? and CO2 + H2O -> ? Let's break down each reaction and determine the products. 1) Cu + O2 -> ? and H2SO4 + Al2O -> ? - The first reaction involves copper (Cu) reacting with oxygen (O2). This is a redox reaction where copper is oxidized and oxygen is reduced. The product of this reaction is copper oxide (CuO) [[1]]. - The second reaction involves sulfuric acid (H2SO4) reacting with aluminum oxide (Al2O). This is an acid-base reaction where sulfuric acid donates a proton (H+) to aluminum oxide. The products of this reaction are water (H2O) and aluminum sulfate (Al2(SO4)3) [[2]]. 2) CuSO4 + Zn -> ? and NaOH + HNO3 -> ? - The first reaction involves copper sulfate (CuSO4) reacting with zinc (Zn). This is a displacement reaction where zinc replaces copper in the compound. The products of this reaction are zinc sulfate (ZnSO4) and copper (Cu) [[3]]. - The second reaction involves sodium hydroxide (NaOH) reacting with nitric acid (HNO3). This is an acid-base reaction where sodium hydroxide donates a hydroxide ion (OH-) to nitric acid. The products of this reaction are water (H2O) and sodium nitrate (NaNO3) [[4]]. 3) KOH + HCl -> ? and Al + S -> ? - The first reaction involves potassium hydroxide (KOH) reacting with hydrochloric acid (HCl). This is an acid-base reaction where potassium hydroxide donates a hydroxide ion (OH-) to hydrochloric acid. The products of this reaction are water (H2O) and potassium chloride (KCl) [[5]]. - The second reaction involves aluminum (Al) reacting with sulfur (S). This is a redox reaction where aluminum is oxidized and sulfur is reduced. The product of this reaction is aluminum sulfide (Al2S3) [[6]]. 4) Ca(OH)2 + HCl -> ? and CO2 + H2O -> ? - The first reaction involves calcium hydroxide (Ca(OH)2) reacting with hydrochloric acid (HCl). This is an acid-base reaction where calcium hydroxide donates a hydroxide ion (OH-) to hydrochloric acid. The products of this reaction are water (H2O) and calcium chloride (CaCl2) [[7]]. - The second reaction involves carbon dioxide (CO2) and water (H2O). This is not a specific reaction, but rather a description of the products formed when carbon dioxide dissolves in water. The products of this dissolution are carbonic acid (H2CO3) [[8]]. Please note that the reactions provided are simplified representations and may not account for all possible side reactions or conditions.