Advertisements
Advertisements
प्रश्न
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Advertisements
उत्तर
When aluminium is dipped in nitric acid a layer of aluminium oxide is formed on the metal. This happens because nitric acid is a strong oxidizing agent. The layer of aluminium oxide prevents further reaction of aluminium. Due to this, the reactivity of aluminium decreases.
APPEARS IN
संबंधित प्रश्न
Differentiate between metal and non-metal on the basis of their chemical properties.
A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.
In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.
What will happen if a strip of zinc is immersed in a solution of copper sulphate?
How would you show that silver is chemically less reactive than copper?
Name two metals which cannot displace hydrogen from dilute acids.
Why is white phosphorus kept immersed under water?
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
Write the chemical equation of the above process.
