Advertisements
Advertisements
प्रश्न
What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
Advertisements
उत्तर
When a zinc rod is dipped in a solution of copper sulphate, zinc, being a more reactive metal than copper, will displace copper from the copper sulphate solution. The blue colour of the copper sulphate solution gradually fades due to the formation of colourless zinc sulphate. The red-brown colour of copper will be deposited on the zinc rod.
\[\ce{\underset{(Blue solution)}{\underset{Copper sulphate}{CuSO4_{(aq)}}} + \underset{(Silvery white)}{\underset{Zinc}{Zn_{(s)}}} -> \underset{(Colourless solution)}{\underset{Zinc sulphate}{ZnSO4_{(aq)}}} + \underset{(Red-brown)}{\underset{Copper}{Cu_{(s)}}}}\]
APPEARS IN
संबंधित प्रश्न
Write equations for the reactions of iron with steam.
Write the chemical reaction when iron reacts with dilute H2SO4.
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.
Name the metal which has been placed at the bottom of the reactivity series.
Name the metal which has been placed just below copper in the reactivity series.
Which of the two metals is more reactive?
Copper or silver
Write an equation for the reaction of:
Sodium with oxygen
Give reasons for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
Which of the following elements would yield a basic oxide?
Na, S, C, K, H
How do non-metals react with hydrogen? Explain with an example.
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What is meant by the reactivity series of metals?
Name one metal which displaces copper from copper sulphate solution.
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 metal less reactive and another metal more reactive than hydrogen are ______.
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
- What is the nature of the oxide E2O?
- State whether element E is a metal or a non-metal.
- Give one example of an element like E.
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
