Question

Na2O → NaOH → NaCl → Na → NaBr​

Answer 1

1) 2Na + O2 = Na2O

2) Na2O + H2O = 2NaOH

3) NaOH + HCl = NaCl + H2O

4) NaCl + Li=LiCI+Na;

5) 2 Na + Br2 → 2 NaBr

Answer 2

The chemical reactions you provided depict a series of transformations starting with sodium oxide (Na2O) and ending with sodium bromide (NaBr). Let's go through each step:

1. Na2O → NaOH: Sodium oxide (Na2O) reacts with water (H2O) to form sodium hydroxide (NaOH) according to the following equation: Na2O + H2O → 2NaOH

2. NaOH → NaCl: Sodium hydroxide (NaOH) reacts with hydrochloric acid (HCl) to produce sodium chloride (NaCl) and water (H2O) through a neutralization reaction: NaOH + HCl → NaCl + H2O

3. NaCl → Na: Sodium chloride (NaCl) can undergo electrolysis, which involves passing an electric current through a molten or aqueous solution of sodium chloride. This process breaks down NaCl into its constituent elements, sodium (Na) and chlorine (Cl2): 2NaCl → 2Na + Cl2

4. Na → NaBr: Finally, sodium (Na) can react with bromine (Br2) to form sodium bromide (NaBr): 2Na + Br2 → 2NaBr

So, summarizing the steps: Na2O → NaOH → NaCl → Na → NaBr

Please note that these reactions represent a theoretical progression based on the given starting material and desired product. In practice, specific reaction conditions, such as temperature, pressure, and catalysts, may be required to achieve the desired outcomes.