Advertisements
Advertisements
Question
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
Solution
When aluminium oxide reacts with hydrochloric acid, it behaves as a basic oxide:
Al2O3(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2O(l)
When aluminium oxide reacts with a base like sodium hydroxide, it behaves as an acidic oxide:
Al2O3(s) + 2NaOH(aq) → 2NaAlO2(aq) + H2O(l)
APPEARS IN
RELATED QUESTIONS
.................... liberated when acetic acid reacts with sodium metal.
(a) Hydrogen
(b) Chlorine
(c) Oxygen
(d) Nitrogen
Complete and balance the following equation:
Na + O2 →
Complete and balance the following equation:
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper
Which of the following reactions will not occur? Why not?
(a) MgSO4 (aq) + Cu (s) → CuSO4 (aq) + Mg (s)
(b) CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)
(c) MgSO4 (aq) + Fe (s) → FeSO4 (aq) + Mg (s)
In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
