what happens when sodium nitrate and copper hydroxide are heated in a boiling water?
When sodium nitrate (NaNO3) and copper hydroxide (Cu(OH)2) are heated in boiling water, several chemical reactions occur.
1. Sodium nitrate dissociates into sodium ions (Na+) and nitrate ions (NO3-).
NaNO3 ⟶ Na+ + NO3-
2. Copper hydroxide decomposes into copper oxide (CuO) and water (H2O).
Cu(OH)2 ⟶ CuO + H2O
3. Sodium ions (Na+) and hydroxide ions (OH-) from copper hydroxide combine to form sodium hydroxide (NaOH).
Na+ + OH- ⟶ NaOH
4. Copper oxide (CuO) reacts with nitrate ions (NO3-) to produce copper nitrate (Cu(NO3)2).
CuO + 2NO3- ⟶ Cu(NO3)2
Overall, the reaction can be summarized as:
2NaNO3 + Cu(OH)2 ⟶ 2NaOH + Cu(NO3)2
In this reaction, sodium nitrate and copper hydroxide react to form sodium hydroxide and copper nitrate. The sodium hydroxide remains dissolved in water while copper nitrate is formed as a solid product.
To determine the reaction that occurs when sodium nitrate (NaNO3) and copper hydroxide (Cu(OH)2) are heated in boiling water, we need to consider the individual compounds.
First, let's look at sodium nitrate (NaNO3). It is a salt composed of sodium ions (Na+) and nitrate ions (NO3-). When heated, sodium nitrate decomposes into sodium nitrite (NaNO2), water (H2O), and oxygen gas (O2). The reaction can be represented as follows:
2 NaNO3(s) -> 2 NaNO2(s) + O2(g)
Next, copper hydroxide (Cu(OH)2) is a hydroxide compound containing copper ions (Cu2+) and hydroxide ions (OH-). When heated, copper hydroxide decomposes into copper oxide (CuO) and water (H2O):
Cu(OH)2(s) -> CuO(s) + H2O(g)
When both sodium nitrate and copper hydroxide are heated together in boiling water, independent reactions will take place.
The sodium nitrate (NaNO3) will decompose into sodium nitrite (NaNO2), releasing oxygen gas (O2) and leaving behind water (H2O). Meanwhile, the copper hydroxide (Cu(OH)2) will decompose into copper oxide (CuO) and water vapor (H2O). The two reactions occur separately and do not directly interact with each other.
Therefore, when sodium nitrate and copper hydroxide are heated in boiling water, sodium nitrate decomposes into sodium nitrite, releasing oxygen gas, while copper hydroxide decomposes into copper oxide and water vapor.