Question

Карточка номер 6закончите уравнения возможных реакций:1.Zn+S2.K+O23. Mg+H2O4., AL+H2SO45. Fe2O3+CU6.Ba+NaOH7.Au+H2SO48.ZnO+Na

Answer 1

2)K+O2=KO2
3)Mg+H2O=MgOH
4)Al+H2SO4=AlSO4+H2

Answer 2

1. Zn + S2: The reaction between zinc (Zn) and sulfur (S) can form zinc sulfide (ZnS) according to the following equation: Zn + S → ZnS [[1]]

2. K + O2: The reaction between potassium (K) and oxygen (O2) can form potassium oxide (K2O) according to the following equation: 4K + O2 → 2K2O [[2]]

3. Mg + H2O: The reaction between magnesium (Mg) and water (H2O) can form magnesium hydroxide (Mg(OH)2) and hydrogen gas (H2) according to the following equation: Mg + 2H2O → Mg(OH)2 + H2 [[3]]

4. Al + H2SO4: The reaction between aluminum (Al) and sulfuric acid (H2SO4) can form aluminum sulfate (Al2(SO4)3) and hydrogen gas (H2) according to the following equation: 2Al + 3H2SO4 → Al2(SO4)3 + 3H2 [[4]]

5. Fe2O3 + Cu: The reaction between iron(III) oxide (Fe2O3) and copper (Cu) can form copper(II) oxide (CuO) and iron (Fe) according to the following equation: Fe2O3 + 3Cu → 3CuO + 2Fe [[5]]

6. Ba + NaOH: The reaction between barium (Ba) and sodium hydroxide (NaOH) can form barium hydroxide (Ba(OH)2) and sodium (Na) according to the following equation: Ba + 2NaOH → Ba(OH)2 + 2Na [[6]]

7. Au + H2SO4: The reaction between gold (Au) and sulfuric acid (H2SO4) does not result in a significant reaction. Gold is a noble metal and is generally unreactive with most acids, including sulfuric acid.

8. ZnO + Na: The reaction between zinc oxide (ZnO) and sodium (Na) can form sodium zincate (Na2ZnO2) according to the following equation: ZnO + 2Na → Na2ZnO2 [[7]]

Please note that the reactions mentioned above are simplified representations and may not take into account specific reaction conditions or stoichiometry.