Question

Cu+S Cu+HCl Cu+H2SO4 Cu+N2

Answer 1

Ответ:

Cu + S = CuS

Cu + HCl ≠ т.к. Cu стоит после H в ряду активности металлов

Cu + H2SO4= CuSO4 + H2↑ (если серная кислота разбавленная)

Cu + N2 ≠

Answer 2

It appears that you've listed several chemical reactions involving copper (Cu). Let me provide you with information on each of these reactions:

1. Cu + S: This represents a simple combination or synthesis reaction between copper (Cu) and sulfur (S) to form copper sulfide (CuS). The balanced chemical equation for this reaction is:

Cu + S → CuS

2. Cu + HCl: This is a single displacement reaction, where copper (Cu) reacts with hydrochloric acid (HCl) to produce copper chloride (CuCl) and hydrogen gas (H2). The balanced chemical equation is:

Cu + 2HCl → CuCl2 + H2

3. Cu + H2SO4: This is also a single displacement reaction. Copper (Cu) reacts with sulfuric acid (H2SO4) to form copper sulfate (CuSO4) and water (H2O). The balanced chemical equation is:

Cu + H2SO4 → CuSO4 + H2O

4. Cu + N2: This reaction represents the combination of copper (Cu) with nitrogen gas (N2). However, copper does not react directly with nitrogen under normal conditions. To create copper nitride (Cu3N2), additional energy and special conditions are required. The balanced equation for the formation of copper nitride is:

3Cu + N2 → Cu3N2

Please note that some of these reactions may require specific reaction conditions or catalysts for the reactions to occur. Additionally, it's essential to perform chemical reactions safely and under appropriate laboratory conditions, as some reactions may produce hazardous byproducts or release harmful gases.