Advertisements
Advertisements
प्रश्न
With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.
Advertisements
उत्तर
Action of metals with water: K, Na, Ca react with cold water.
K: Darts on the water surface and react violently.
Na: Revolves on the water surface and bums.
Ca: Sinks in water, react less violently.
Hence, K > Na > Ca calcium is less reactive than K and Na.
Mg and Al react with boiling water/steam.
Hence, Mg and Al are less reactive than K, Na, and Ca. Zn, Fe, Pb also react with steam and reaction stops soon. Fe when hot reacts with steam
This shows that Mg > Al > Zn > Fe > Pb.
Cu, Hg, Ag, Pt, Au do not react with steam or even when hot is less reactive.
APPEARS IN
संबंधित प्रश्न
What do you observe when silver nitrate is added to a solution of sodium chloride?
How will you obtain Zinc chloride from zinc.
Also give balanced equations for the reactions
What do you observe when magnesium ribbon is burnt in oxygen?
What is meant by the metal reactivity series ? State its importance, (any two points).
Write chemical equation for the event.
Electrolysis of alumina is done.
State what is meant by the ‘reactivity series of metals’
Select the correct answer for the statement given below:
The catalyst used in the catalytic reaction involving the reactants nitrogen and hydrogen.
Give a balanced equation for the following type of reaction:
A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.
Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg
| More reactive | Moderately reactive | Less reactive |
Observe the following diagram and identify the type of reaction and write observation.
