Question

Помогите расставить коэффициенты , указать тип химической реакции : KOH + H2SO4 -> K2SO4 + H2O CO + O2 -> CO2 Fe + H2O -> Fe3O4 + H2 KNO3 -> KNO2+ O2 Li + N2 -> Li3N All(OH)3 + HCl -> AlCl2 + H2O FeCl3 + Zn -> ZnCl2 + Fe

Answer 1

H2SO4+2KOH=K2SO4+2H2O  реакция обмена
 2CO+O2=2CO2  горения
4Fe + 5H20 = Fe2O3+2FeO + 5H2 Тип реакции двойная замена
2KNO3 = 2KNO2 + O2  Разложение
3Zn + 2FeCl3 = 3ZnCl2 + 2Fe замещение 
3HCl + Al(OH)3 = AlCl3 + 3H2O Двойная замена
6Li+N2=2Li3N  горения

Answer 2

Balancing Chemical Equations and Identifying Reaction Types

Let's go through each chemical equation and balance them while identifying the reaction types.

1. KOH + H2SO4 -> K2SO4 + H2O This is a neutralization reaction between an acid (H2SO4) and a base (KOH). The products are a salt (K2SO4) and water (H2O). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. The balanced equation is: 2 KOH + H2SO4 -> K2SO4 + 2 H2O.

2. CO + O2 -> CO2 This is a combustion reaction, where a substance reacts with oxygen to produce carbon dioxide. To balance the equation, we need to ensure that the number of carbon and oxygen atoms is the same on both sides of the equation. The balanced equation is: 2 CO + O2 -> 2 CO2.

3. Fe + H2O -> Fe3O4 + H2 This is a redox reaction, where iron (Fe) reacts with water to form iron(II,III) oxide (Fe3O4) and hydrogen gas (H2). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. The balanced equation is: 3 Fe + 4 H2O -> Fe3O4 + 4 H2.

4. KNO3 -> KNO2 + O2 This is a decomposition reaction, where a compound breaks down into simpler substances. Potassium nitrate (KNO3) decomposes to form potassium nitrite (KNO2) and oxygen gas (O2). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. The balanced equation is: 2 KNO3 -> 2 KNO2 + O2.

5. Li + N2 -> Li3N This is a synthesis reaction, where two or more substances combine to form a single compound. Lithium (Li) reacts with nitrogen gas (N2) to form lithium nitride (Li3N). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. The balanced equation is: 6 Li + N2 -> 2 Li3N.

6. All(OH)3 + HCl -> AlCl2 + H2O This is a double displacement reaction, where the positive and negative ions of two compounds exchange places. Aluminum hydroxide (Al(OH)3) reacts with hydrochloric acid (HCl) to form aluminum chloride (AlCl2) and water (H2O). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. The balanced equation is: 2 Al(OH)3 + 6 HCl -> 2 AlCl3 + 6 H2O.

7. FeCl3 + Zn -> ZnCl2 + Fe This is a single displacement reaction, where an element reacts with a compound and displaces another element from it. Iron(III) chloride (FeCl3) reacts with zinc (Zn) to form zinc chloride (ZnCl2) and iron (Fe). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. The balanced equation is: 2 FeCl3 + 3 Zn -> 3 ZnCl2 + 2 Fe.

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