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).
APPEARS IN
संबंधित प्रश्न
When a metallic oxide is dissolved in water, the solution formed has a high concentration of ____________ ions (H+, h3O+, OH-)
State one relevant observation for the following.
Lead nitrate solution is treated with sodium hydroxide solution dropwise till it is excess.
Name a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : CuSO4
Give two examples of amphoteric hydroxides.
Name: A weak alkali.
What do you see when sodium hydroxide solution is added to zinc sulphate solution, till it is in excess?
One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Calcium nitrate solution and zinc nitrate solution.
Write balanced equations for a metal that evolves into a gas which burns with a pop sound when boiled with alkali solutions.
Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
