Question

Закончите уравнения реакций 34 балла H3PO4 + Hg H2SO4 + Al Cu (NO3)2 +Mg Mg (NO3)2 + Cu SO3 + CaO Cu(OH)2 + HNO3 NaOH + CuSO4 Mg(OH)2 H2SiO3

Answer 1

2H3PO4 + 3Hg - не будет реакции
3H2SO4 + 2Al - Al2(SO4)3+3H2
Cu(NO3)2 +Mg - Mg(NO3)2+Cu
Mg (NO3)2 + Cu - реакции не произойдет
SO3 + CaO - CaSO4
Cu(OH)2 +2HNO3 - Сu(NO3)2+2H2O
2NaOH + CuSO4 - Na2SO4+Cu(OH)2
Mg(OH)2 - MgO+H2O
H2SiO3 - SiO2+H2O

Answer 2

H3PO4 + Hg= не идет (металл - после водорода)
3H2SO4 +2Al=Al2(SO4)3+3H2
Cu (NO3)2 +Mg=Mg(NO3)2+Cu
Mg (NO3)2 + Cu= не идет( медь левее Mg , не вытеснит его из соли)
SO3 + CaO=СaSO4
Cu(OH)2 +2HNO3=Cu(NO3)2+2H2O
2NaOH + CuSO4=Na2SO4+Cu(OH)2
Mg(OH)2=MgO+H2O
H2SiO3-SiO2+H2O

Answer 3

Balancing Chemical Equations

Balancing chemical equations involves ensuring that the same number of each type of atom is present on both sides of the equation. Let's balance the given chemical equations.

1. H3PO4 + Hg → H2SO4 + Hg3(PO4)2 This equation is not balanced. To balance it, we can use the following coefficients: ``` H3PO4 + 3Hg → H2SO4 + Hg3(PO4)2 ```

2. Al + Cu(NO3)2 → Al(NO3)3 + Cu This equation is already balanced.

3. Mg + Mg(NO3)2 → Mg(NO3)2 + Mg This equation is not balanced. To balance it, we can use the following coefficients: ``` 3Mg + 2Mg(NO3)2 → 2Mg(NO3)2 + 3Mg ```

4. Cu + SO3 → Cu2(SO3)3 This equation is not balanced. To balance it, we can use the following coefficients: ``` 2Cu + 3SO3 → Cu2(SO3)3 ```

5. CaO + Cu(OH)2 → Ca(OH)2 + CuO This equation is not balanced. To balance it, we can use the following coefficients: ``` CaO + Cu(OH)2 → Ca(OH)2 + CuO ```

6. HNO3 + NaOH → NaNO3 + H2O This equation is already balanced.

7. CuSO4 + Mg(OH)2 → Cu(OH)2 + MgSO4 This equation is not balanced. To balance it, we can use the following coefficients: ``` CuSO4 + 2Mg(OH)2 → Cu(OH)2 + MgSO4 ```

8. H2SiO3 → SiO2 + H2O This equation is not balanced. To balance it, we can use the following coefficients: ``` H2SiO3 → SiO2 + H2O ```

These balanced chemical equations should help in understanding the conservation of mass and the stoichiometry of chemical reactions.