Advertisements
Advertisements
प्रश्न
Choose the most appropriate answer from the following list of oxides which fit the description.
[SO2, SiO2, Al2O3, MgO, CO, Na2O]
A basic oxide.
Advertisements
उत्तर
Na2O or MgO
Explanation:
Basic oxides are oxides of metals that react with acids to form salt and water.
From the given list, the metal oxides are Na₂O (Sodium Oxide) and MgO (Magnesium Oxide).
Na₂O (Strongly Basic): Dissolves in water to form NaOH (Sodium Hydroxide), a strong base.
\[\ce{Na2O + H2O -> 2NaOH}\]
MgO (Weakly Basic): Reacts with acids to form salt and water. It is less soluble in water but still basic.
\[\ce{MgO + 2 HCl -> MgCl2 + H2O}\]
Na₂O (Strongly basic) or MgO (Weakly basic).
संबंधित प्रश्न
Choose the most appropriate answer from the following list of oxides which fit the description.
[SO2, SiO2, Al2O3, MgO, CO, Na2O]
An amphoteric oxide
State one relevant observation for the following.
Lead nitrate solution is treated with sodium hydroxide solution drop wise till it is in excess.
A compound X (having vinegar like smell) when treated with ethanol in the presence of the acid Z, gives a compound Y which has a fruity smell.
The reaction is: \[\ce{C2H5OH + X ->[Z] Y + H2O}\]
- Identify Y and Z.
- Write the structural formula of X.
- Name the above reaction.
Name a metallic oxide soluble in excess of caustic soda solution.
Name two bases which are not alkalis but dissolves in strong alkalis.
Name the metal hydroxides which are:
Sparingly soluble
In caustic soda solution
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : ZnSO4
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : Pb(NO3)2
What do you understand by amphoteric oxide?
Fill in the blank.
To distinguish soluble salts of zinc and lead ______ [NaOH / NH4OH]can be used.
