Question

Write the balanced chemical equation for the following reactions.

1. Preparation of carbon dioxide in the laboratory.

2. Thermal decomposition of limestone.

3. Decomposition of magnesium nitrate.

4. Reaction of sodium with oxygen.

5. Thermal decomposition of lead IV oxide.

6. Formation of ammonium chloride.

7. Reaction of potassium iodide and lead nitrate solution.

8. Reaction of iron nail with copper sulphate solution.

9. Combustion of methane gas.

10. Reaction of carbon dioxide with lime water.

11. Formation of ammonia.

12. Thermal decomposition of aluminium hydroxide.​

Answer 1

Answer:

1) Answer-CaCO3+2HCl→CaCl2+H2O+CO2

2) Answer-Calcium carbonate

3) Answer-Since magnesium nitrate has a high affinity for water, heating the hexahydrate does not result in the dehydration of the salt, but rather its decomposition into magnesium oxide, oxygen, and nitrogen oxides: 2 Mg(NO3)2 → 2 MgO + 4 NO2 + O2.

4) Answer-Sodium reacts with oxygen to form sodium oxide and has the following balanced chemical equation: 4 Na + O2 --> 2 Na2O.

5) Answer-PbO2 = PbO + O2 | Chemical reaction and equation.

6) Answer- 8NH3(Express)+3Cl2→N2+6NH4Cl.

7) Answer- Lead II Nitrate Reaction With Potassium Iodide - Pb(NO3)2 + KI.

8) Answer-The reaction for this experiment is Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s). In this reaction we will be reacting 2.24 g of Fe with 8.00 g of CuSO4 to form Cu.

9) Answer-CH4(g)+2O2(g)→CO2(g)+2H2O(g).

10) Answer- Resultant carbon dioxide passed through limewater in the right tube, producing a milky solution due to precipitation of the insoluble suspension of calcium carbonate: Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O.

11) Answer-The balanced chemical equation for the formation of ammonia gas by the reaction between nitrogen gas an hydrogen gas is given. N2+3H2→2NH3.

12) Answer-2 Al (OH) ₃ → Al₂O₃ + 3 H₂O.